peter.smart58's dashboard

Firefox 3.5.2 keeps disappearing. It doesn't crash, just disappears. There's no trace of it in applications running. Have updated flash and java which I thought may have been the problem, but no good.
It seems particularly to happen if I need to add a file to send some info. If I click on the 'browse' box to find a file to add, firefox just disappears.
It happens at other times too, but thats the most annoying problem.
Any ideas ?
Thanks
Peter