Same problem. I was not having problems with the previous version of FF. I do not have this problem with IE or Chrome. It's just since updating to FF 4.01. So I'd say it's definitely Mozilla's problem. They need to fix this.

Still have the problem here. Started using IE to send gifts and post, then go back to Firefox. Takes a little more time, but it is worth it to avoid the agravation. One thing to bear in mind though, I am not entirely computer literate and trying to work on my patience skills at the same time. The way I look at it is if its working fine, if it isn't working try something else.