Updating posts Hang/Freezes WordPress

Hi there,

I am running WordPress 2.7 and it seems to work fine most of the time, except sometimes when my posts get longer than around 1000 words, I start to have random timeout errors when I click “update”, it just goes to a white/blank screen in firefox or IE says “Internet explorer cannot display this webpage”. Does anyone have any advice as to what I should do? I really want to fix this because everything else is working great and I’m sure this is not normal behaviour?

Thanks,
Aonghas