I've been running into an issue with a client's computer. Here's the problem: every so often, Windows doesn't allow him to open any additional apps. The apps that he's currently using work fine. I've ran spyware/virus scans to no avail. I also tried this "fix", but again, no luck: http://weblogs.asp.net/kdente/archive/2004/06/04/148145.aspx
What I mean by "he's not able to open any additional apps" is that, when he tries to open another application, nothing happens, no error message, nothing. This is really hard to troubleshoot as there is nothing that stands out in the event log. It seems as though some limit has been reached. Memory usage seemed to be normal though. Tried troubleshooting it by having procdump monitor explorer.exe and some of his day-to-day apps he's running...nothing