Created attachment 605241 [details] backtrace evolution Description of problem: The dramatic slowdown in the work of evolution when you select more than 2,000 letters Demonstration video: https://docs.google.com/open?id=0B0nwzlfiB4aQcmFrVVpzV1ZYbms
Created attachment 605242 [details] backtrace evolution
i don't know why Google don't watch previous video. But I upload again: https://docs.google.com/open?id=0B0nwzlfiB4aQbVFyak9CYjBocEk and all Ok.
Thanks for a bug report. I'm able to reproduce something similar with IMAP folders as well, thus it's a general issue with message list from my point of view. I moved this upstream as [1]. Please see [1] for any further updates. [1] https://bugzilla.gnome.org/show_bug.cgi?id=682277