The issue with the in-game browser is that it's a *very* old version of firefox and handles flash like poo. :( I don't know of a way that disables flash on it, though for some reason my in-game browser never uses flash so I haven't been able to reproduce the crashes myself.
If you do know of any particular ads that are causing the crash I'll be happy to pass on the information. :)
Edited, Jul 21st 2011 6:35pm by Cyliena