prowsej

I was having this problem. Any files that I downloaded from IE, Safari, or Firefox would not appear in the place where I had chosen to download them. They might flash there for a second, but then they would disappear. Files that I downloaded via Opera would download fine.

I solved the problem by doing a system restore to a point yesterday. In the meantime I had updated some software, uninstalled some software, installed a Windows update, and installed an update to AVG antivirus. The problem likely lay with one of those actions. However, the system restore has addresses the problem.