Ubuntu Problem Update

So, I reinstalled Ubuntu 8.04 LTS and I’ve encountered the same bug.  Again, X died when I middle-clicked a firefox tab to close it.  I was using Firefox 3.0b5 with the Tree Style Tabs plug-in at the time.  I’ve also got desktop effects enabled.  I was viewing a flash video at the time with adobe’s !free flash plug-in.

In the meantime I’ve uninstalled Tree Style Tabs.  If the problem ceases then it’s likely a problem with Tree Style Tabs and I’ll try to reproduce the bug and get some meaningful output.  Otherwise it might be a Firefox bug and the situation might change if/when I update to RC1.