Been a long time since I’ve drug this one out...
http://www.freerepublic.com/focus/f-news/1299854/posts
(It REALLY works)
Don’t know if it will necessarily help in your situation, but it certainly won’t hurt.
Thank you for this post, I’ve been battling FF for a year due to freezes/non responses. Tried this fix last night and the problems have totally disappeared.