Mozilla 3.0.0.3 crashes when working with habrahabr

Here with such an error, I often get a browser when working with Habr. Most often happens when following a link to a profile (username.habrahabr.ru/).
When working with other sites, this has never been seen.
I get similar on the current version 3.0.0.3, but on the deuce it was similar.
The frequency is strange - sometimes several times a day, then a week everything is quiet.
Installed plugins:
AdBlock, BBCodeExtra, CSS \ HTML validator, firebug, firecookie, fireshot, flashgot, FoxyTunes, ScrapBook, Stylish and a couple of others. I’ve been using everyone for a long time, I’m not installing new ones, I’m not breaking the system, therefore, although I accept the option with conflicts of plug-ins and Habr, it’s very abstract.
Questions:
1 - somebody faced similar (in a discussion of a habr did not find)
2 - how it is possible to trace the reason?
3 - and most importantly - how to fight?
Thank you in advance for your options.