After installing the latest Reader (9.3) for a client, their Internet Explorer remains in memory after closing it completely (iexplore.exe processes stay in task manager). This wouldn't be a problem because IE still starts back up just fine, but it causes another program they use to hang when they are trying to perform some tasks in it. When it hangs, I can close out the processes, but there's a 50/50 chance it stops hanging and continues or stays hung up. After uninstalling Reader, IE closes out fine and immediately, and their other program works fine. The other program is a little older, most likely a Windows 3.1 16-bit program. I was not yet been able to disable the Link Helper add-on for IE to see if that was the cause. Any other ideas?