This has been happening to me with all Netscape 4.7 versions. I've tried a couple of different RPMs. Basically most of the time (not all of the time though) when I close one window it kills the entire app. I'm clicking on the close button (X) in the title bar (and yes I'm using the left mouse button). This is very much a pain when you have a lot of windows open. I'm have the following Netscape RPMs: netscape-navigator-4.7-1.1 netscape-communicator-4.7-1.1 netscape-common-4.7-1.1
This seems to be a bad interaction between the Motif code in Netscape and recent glibc-based XFree86 libraries; the current most likely culprit is that the Motif code in Netscape is compiled against older libraries, possibly even against libc5. *** This bug has been marked as a duplicate of 6409 ***