Description of problem: Open a fresh clean firefox and browse to http://blastr.com Version-Release number of selected component (if applicable): firefox-40.0-3.fc21.x86_64 How reproducible: Very Steps to Reproduce: 1. Start Firefox 2. Open http://blastr.com 3. Actual results: Firefox freezes Expected results: Additional info: If I run Firefox on the command line I get the following output 2015-08-19 13:45:35: stackwalker.cc:125: INFO: Couldn't load symbols for: /lib64/libc.so.6|5C38F53DE56B42293A8AE3DD39A3DEB90 2015-08-19 13:45:35: basic_code_modules.cc:88: INFO: No module at 0x0 2015-08-19 13:45:35: stackwalker.cc:125: INFO: Couldn't load symbols for: /usr/lib64/firefox/libxul.so|5E752789CB231B2A22C122DA9291DADC0 2015-08-19 13:45:35: basic_code_modules.cc:88: INFO: No module at 0x5ffffffff 2015-08-19 13:45:35: basic_code_modules.cc:88: INFO: No module at 0x7f79cde45be0 2015-08-19 13:45:35: basic_code_modules.cc:88: INFO: No module at 0x1 2015-08-19 13:45:35: stackwalker.cc:125: INFO: Couldn't load symbols for: /lib64/libglib-2.0.so.0|BBA35C4FF0F22E903D65B2BAC761BD470 2015-08-19 13:45:35: basic_code_modules.cc:88: INFO: No module at 0xffffffff 2015-08-19 13:45:35: basic_code_modules.cc:88: INFO: No module at 0x18962377f 2015-08-19 13:45:35: basic_code_modules.cc:88: INFO: No module at 0xffffffff7fffffff 2015-08-19 13:45:35: basic_code_modules.cc:88: INFO: No module at 0x4cab12ecd5899900 2015-08-19 13:45:35: basic_code_modules.cc:88: INFO: No module at 0x1 2015-08-19 13:45:35: basic_code_modules.cc:88: INFO: No module at 0x7f79e2248e40 2015-08-19 13:45:35: basic_code_modules.cc:88: INFO: No module at 0x1 2015-08-19 13:45:35: basic_code_modules.cc:88: INFO: No module at 0x0 2015-08-19 13:45:35: basic_code_modules.cc:88: INFO: No module at 0x7f79d17443c0 2015-08-19 13:45:35: basic_code_modules.cc:88: INFO: No module at 0x0 2015-08-19 13:45:35: basic_code_modules.cc:88: INFO: No module at 0x1 2015-08-19 13:45:35: basic_code_modules.cc:88: INFO: No module at 0x7f79d17443c0 2015-08-19 13:45:35: basic_code_modules.cc:88: INFO: No module at 0x7f79d17443c0 2015-08-19 13:45:35: basic_code_modules.cc:88: INFO: No module at 0x1 2015-08-19 13:45:35: basic_code_modules.cc:88: INFO: No module at 0x133b8 2015-08-19 13:45:35: basic_code_modules.cc:88: INFO: No module at 0xb42fc97 2015-08-19 13:45:35: basic_code_modules.cc:88: INFO: No module at 0x7f79e22f78a0 2015-08-19 13:45:35: basic_code_modules.cc:88: INFO: No module at 0x4b2077c 2015-08-19 13:45:35: basic_code_modules.cc:88: INFO: No module at 0x0 2015-08-19 13:45:35: basic_code_modules.cc:88: INFO: No module at 0x7f79d746f800 2015-08-19 13:45:35: basic_code_modules.cc:88: INFO: No module at 0x4cab120100000014 2015-08-19 13:45:35: stackwalker.cc:125: INFO: Couldn't load symbols for: /lib64/libpthread.so.0|9EC9F639CD1E2B6A9207A8595A90FEE30 2015-08-19 13:45:35: basic_code_modules.cc:88: INFO: No module at 0x7f79e22f78a0 2015-08-19 13:45:35: basic_code_modules.cc:88: INFO: No module at 0x1 2015-08-19 13:45:35: basic_code_modules.cc:88: INFO: No module at 0x7fffc011e030 2015-08-19 13:45:35: basic_code_modules.cc:88: INFO: No module at 0x7fffc011e097 2015-08-19 13:45:35: basic_code_modules.cc:88: INFO: No module at 0x1 2015-08-19 13:45:35: basic_code_modules.cc:88: INFO: No module at 0x1 2015-08-19 13:45:35: basic_code_modules.cc:88: INFO: No module at 0x80040154 2015-08-19 13:45:35: basic_code_modules.cc:88: INFO: No module at 0x7fffc011e090 2015-08-19 13:45:35: basic_code_modules.cc:88: INFO: No module at 0x7f79d17443c8 2015-08-19 13:45:35: basic_code_modules.cc:88: INFO: No module at 0x7f79b5ccc460 2015-08-19 13:45:35: basic_code_modules.cc:88: INFO: No module at 0x7f79d4e0dfe0 2015-08-19 13:45:35: basic_code_modules.cc:88: INFO: No module at 0x0 2015-08-19 13:45:35: basic_code_modules.cc:88: INFO: No module at 0x0 2015-08-19 13:45:35: basic_code_modules.cc:88: INFO: No module at 0x7f79e22f78c8 2015-08-19 13:45:35: basic_code_modules.cc:88: INFO: No module at 0x4cab12ecd5899900 2015-08-19 13:45:35: basic_code_modules.cc:88: INFO: No module at 0x7f79d748a740 2015-08-19 13:45:35: basic_code_modules.cc:88: INFO: No module at 0x1 2015-08-19 13:45:35: basic_code_modules.cc:88: INFO: No module at 0x7f79e22f7800 2015-08-19 13:45:35: basic_code_modules.cc:88: INFO: No module at 0x7f79d74240e0 2015-08-19 13:45:35: basic_code_modules.cc:88: INFO: No module at 0x7f79d74863e0 2015-08-19 13:45:35: basic_code_modules.cc:88: INFO: No module at 0x7fffc011e1d8 2015-08-19 13:45:35: basic_code_modules.cc:88: INFO: No module at 0x80004005 2015-08-19 13:45:35: basic_code_modules.cc:88: INFO: No module at 0x7f79c2c68260 2015-08-19 13:45:35: basic_code_modules.cc:88: INFO: No module at 0x4cab12ecd5899900 2015-08-19 13:45:35: basic_code_modules.cc:88: INFO: No module at 0x7f79d74863c0 2015-08-19 13:45:35: basic_code_modules.cc:88: INFO: No module at 0x0 2015-08-19 13:45:35: basic_code_modules.cc:88: INFO: No module at 0x0 2015-08-19 13:45:35: basic_code_modules.cc:88: INFO: No module at 0x4cab12ecd5899900 2015-08-19 13:45:35: basic_code_modules.cc:88: INFO: No module at 0x7fffc011e340 2015-08-19 13:45:35: basic_code_modules.cc:88: INFO: No module at 0x7f79d74240e0 2015-08-19 13:45:35: basic_code_modules.cc:88: INFO: No module at 0x7f79e22f78a0 2015-08-19 13:45:35: basic_code_modules.cc:88: INFO: No module at 0x7fffc011e1e8 2015-08-19 13:45:35: basic_code_modules.cc:88: INFO: No module at 0x7fffc011e4a9 2015-08-19 13:45:35: basic_code_modules.cc:88: INFO: No module at 0x7f0000000001 2015-08-19 13:45:35: basic_code_modules.cc:88: INFO: No module at 0x7f79d74240e0 2015-08-19 13:45:35: basic_code_modules.cc:88: INFO: No module at 0x0 2015-08-19 13:45:35: basic_code_modules.cc:88: INFO: No module at 0x4cab12ecd5899900 2015-08-19 13:45:35: basic_code_modules.cc:88: INFO: No module at 0x7f79d17443c0 2015-08-19 13:45:35: basic_code_modules.cc:88: INFO: No module at 0x8000ffff 2015-08-19 13:45:35: basic_code_modules.cc:88: INFO: No module at 0x7f79d1611ba0 2015-08-19 13:45:35: basic_code_modules.cc:88: INFO: No module at 0x7fffc011e340 2015-08-19 13:45:35: basic_code_modules.cc:88: INFO: No module at 0x7fffc011e1f8 2015-08-19 13:45:35: basic_code_modules.cc:88: INFO: No module at 0x7fffc011e1d0 2015-08-19 13:45:35: basic_code_modules.cc:88: INFO: No module at 0x2000c011e1f8 2015-08-19 13:45:35: basic_code_modules.cc:88: INFO: No module at 0x7fffc011e1b8 2015-08-19 13:45:35: basic_code_modules.cc:88: INFO: No module at 0x7fffc011e1c0 2015-08-19 13:45:35: basic_code_modules.cc:88: INFO: No module at 0x7f79e2249d40 2015-08-19 13:45:35: basic_code_modules.cc:88: INFO: No module at 0x7f79d4e0a8c0 2015-08-19 13:45:35: basic_code_modules.cc:88: INFO: No module at 0x100000009 2015-08-19 13:45:35: basic_code_modules.cc:88: INFO: No module at 0x0 2015-08-19 13:45:35: basic_code_modules.cc:88: INFO: No module at 0x7f79d4e0c740 2015-08-19 13:45:35: basic_code_modules.cc:88: INFO: No module at 0x7f79d1611ba0 2015-08-19 13:45:35: basic_code_modules.cc:88: INFO: No module at 0x0 2015-08-19 13:45:35: basic_code_modules.cc:88: INFO: No module at 0x7f79cbe91840 2015-08-19 13:45:35: basic_code_modules.cc:88: INFO: No module at 0x7f79ced08100 2015-08-19 13:45:35: basic_code_modules.cc:88: INFO: No module at 0x7f79d74f6e70 2015-08-19 13:45:35: basic_code_modules.cc:88: INFO: No module at 0x7f79d04e7af8 2015-08-19 13:45:35: basic_code_modules.cc:88: INFO: No module at 0x500000026 2015-08-19 13:45:35: basic_code_modules.cc:88: INFO: No module at 0x7f79d74f6e70 2015-08-19 13:45:35: basic_code_modules.cc:88: INFO: No module at 0x0 2015-08-19 13:45:35: basic_code_modules.cc:88: INFO: No module at 0x0 2015-08-19 13:45:35: basic_code_modules.cc:88: INFO: No module at 0x30322f3532373533 2015-08-19 13:45:35: basic_code_modules.cc:88: INFO: No module at 0x3331333036303531 2015-08-19 13:45:35: basic_code_modules.cc:88: INFO: No module at 0x7fffc011e248 2015-08-19 13:45:35: basic_code_modules.cc:88: INFO: No module at 0x1001100000004 2015-08-19 13:45:35: basic_code_modules.cc:88: INFO: No module at 0x2f00780000000f 2015-08-19 13:45:35: basic_code_modules.cc:88: INFO: No module at 0x7fffc011e248 2015-08-19 13:45:35: basic_code_modules.cc:88: INFO: No module at 0x7f0036393034 2015-08-19 13:45:35: basic_code_modules.cc:88: INFO: No module at 0x0 2015-08-19 13:45:35: basic_code_modules.cc:88: INFO: No module at 0x7fffc011e2b0 2015-08-19 13:45:35: basic_code_modules.cc:88: INFO: No module at 0x0 2015-08-19 13:45:35: basic_code_modules.cc:88: INFO: No module at 0x0 2015-08-19 13:45:35: basic_code_modules.cc:88: INFO: No module at 0x7f79e2297548 2015-08-19 13:45:35: basic_code_modules.cc:88: INFO: No module at 0x7f79e2297560 2015-08-19 13:45:35: basic_code_modules.cc:88: INFO: No module at 0x4cab12ecd5899900 2015-08-19 13:45:35: basic_code_modules.cc:88: INFO: No module at 0x7fffc011e2b0 2015-08-19 13:45:35: basic_code_modules.cc:88: INFO: No module at 0x7fffc011e340 2015-08-19 13:45:35: basic_code_modules.cc:88: INFO: No module at 0x0 2015-08-19 13:45:35: basic_code_modules.cc:88: INFO: No module at 0x7fffc011e2d8 2015-08-19 13:45:35: basic_code_modules.cc:88: INFO: No module at 0x7fffc011e378 2015-08-19 13:45:35: basic_code_modules.cc:88: INFO: No module at 0x0 2015-08-19 13:45:35: basic_code_modules.cc:88: INFO: No module at 0x7fffc011e558 2015-08-19 13:45:35: basic_code_modules.cc:88: INFO: No module at 0x7f010000001a
Please try to disable OMTC - go to about:config and set "layers.offmainthreadcomposition.enabled" to false.
Looks like they have changed something on their website as the freeze stopped happenning a couple of days ago. If it re-occurs I'll try the MOTC fix.
Thanks, please reopen if you see it again.