From bug 51363, there is a fatal imagelib assertion reached when visiting my.lycos.com. The crash seems to occur well after the page has loaded.
Correction. The crash occurs as soon as the page finishes loading. But for some reason that load takes a long time.
This is probably a dupe of bug 61654. In that case, its an invalid tracking gif triggering the assertion/crash, which is why it occurs after the page has loaded. *** This bug has been marked as a duplicate of 61654 ***