What do you mean by 'interfering' with other applications ?. Do you have much harddisk space left, or is it running out. If you are using AOL, you may want to un-install IE (If you can, depending on version), to free up some space, as well as clearing the temp folders. If you've got plenty of disk space, but are having problems with AOL when it's running, you could upgrade to AOL 6. I'm guessing, but I would expect AOL to manage memory in a similar manner to other programs, when it runs low, it starts to page to the harddrive (which will cause a problem if the harddrive is full).
ickle