Regular Mozilla crashes - suggestions?

Hi -

I recently got a new iBook and Mozilla crashes regularly on it.  Mozilla works
like a champ on my other computers but something is not right with Moz and this
iBook.

It usually crashes during the my.netscape homepage start up.  It seems like
whenever it gets an image from the ar.atwola.com image server (for ads) it
crashes.   I've tried both blocking and allowing atwola to load images from
preferences, but it still crashes. 

Of course it's probably something unrelated to an image server that's causing
the crashes - other sites crash too (like espn) that don't use atwola.

I've tried doing a clean install:

	1.	 Remove the folder "Mozilla" from /Users/yourusername/Library
	2.	 Remove the file "Mozilla Registry" from
/Users/yourusername/Library/Preferences
	3.	 Remove Mozilla from the installed location. (i.e. /Applications)

Then reinstalling, but still having the same problems.

The same crashes in the same pages happen for me in Netscape and Chimera.  I'm
running the latest nightly build of Mozilla (though I'm having the same
troubles when I've tried Mozilla 1.4 too).

Any suggestions on what to try (besides switching to Safari)?

Thanks a lot,

Jeff