FYI: I noticed this a few times yesterday day also – i.e. have a couple of tabs open, load up Blogoscoped, and Firefox 1.5.0.3 (on XP) goes crashing. Probably happened about 10-20% of the time – have not seen it yet today.

Tip: It's worth of reporting this issue to Mozilla developers via 'Report a broken Web site... wizard' located at Help menu.
I have a localized version in use, but it's the 4th menu item;-)
Please include full details of your OS, your extensions installed and are the all extensions enabled.

Thanks for that Juha-Matti, I sent them a report with all the details.

FYI: Extensions (all enabled):
ColorZilla
Adblock
Flashblock
GooglePreview
SEOpen
SearchStatus

FF 1.5 (XP)

Fine! Let's hope they will read your submission and make future improvements.

Rich, you should get Firefox 1.5.0.3, do a custom install, and make sure "Quality Feedback Agent" gets installed. If the problem still occurs in 1.5.0.3, QFA (also known as "Talkback") will prompt you to send a report with useful crash information.

Thanks for sharing this information to readers, Robert. Not all users will notice this option during their setup process, or they 'untinck' the selection of mystery QFA ;-)