Cleared all the cache / cookies and all data in my Firefox browser and it still logs me out while I'm in the middle of a transaction! I don't even leave it for 15 mins and it already logs out. FYI - my time out was set to 1 hour.

I agree with everyone else on this thread...why do you have a timeout feature - maybe 24 hours or so, but 3 hrs max? Geez.