It means you have to many applications( windows) running at 1 time. If you have AOL, there are usually 3 or 4 windows that open when you sign on, like the 'welcome screen', 'buddy list', sometimes I have 'my favorites open', and when you do Milesource or other reward programs each is an open window. I can only have about 15 windows open at a time, so when I do clickfix, I right click and hit "open in a new window" so I can open about 9 at a time then after they reward me I close those and finish the rest. Also if you are looking around windows will open on top of each other- especially if searching or shopping. In this case youu need to start exiting out of things, as a new one opens. One more note some computers slow down the more windows that are open so it is a good habit to close unnecessary windows anyway. Hope this makes sense I have a roomful of kids chattering away behind me....oh can't wait til school starts .......