Organize your desktop items in the order that you would like them to stay. Make sure they are all in the correct spot before you continue the process. Right-click with your mouse anywhere on your desktop. Select "View" on the options tab that comes up. Select "Desktop Items" next and uncheck the line that says "Auto Arrange" by clicking on it. Click "Align to Grid" to align your desktop icons in their current position. Click "Show Desktop Items" to make any further changes and finalize the positions of your desktop icons. Click "Apply" in the desktop menu and your icons will be locked in their current position the next time you turn off, reboot or reconfigure your computer.

2 things you can try: If you are logged on as the Administrator and you moved the icons to areas you want...then Right - Click on a blank area of your desktop and select "View"...and uncheck "Auto Arrange" and "Align to Grid". Or see link if the above does not help... Here is a link that might be useful: icon_restore

The only other thing I could do is look at a hijackthis log and see what's running on the computer. Click Here to download HJTInstall.exe Save HJTInstall.exe to your desktop. Doubleclick on the HJTInstall.exe icon on your desktop. Right click the Hijackthis Icon and Run as Adminstrator if you use Vista or Windows 7 By default it will install to C:\Program Files\Trend Click on Install. It will create a HijackThis icon on the desktop. Once installed, it will launch Hijackthis. Click on the Do a system scan and save a logfile button. It will scan and the log should open in notepad. Click on "Edit > Select All" then click on "Edit > Copy" and Paste the entire contents of the log into your next post. DO NOT use the AnalyzeThis button, its findings are dangerous if misinterpreted. DO NOT have Hijackthis fix anything yet. Most of what HJT lists will be harmless or even required by your Operating System.

When this problem surfaces on a new installation, it is possible (albeit unlikely) that one of the sashes was manufactured slightly too tall. In a situation where there are existing windows that have been installed for awhile, the problem typically arises from a poor quality window that bows, or a poor installation that worsened the condition over time. Modern vinyl windows have fully welded sash stiles and rails, so it is not possible to disassemble. They have snap-in glazing beads that pop in and out for glass replacement. Even the older mechanically fastened units use that same method, and it would be very tedious and not at all advisable to try and cut down the height of a sash. Generally speaking if you are seeing a situation similar to the OP in your inspections with a 15 yr old home/window, it has just about reached its life expectancy. A high quality product regardless of material can/should last far longer, however it is VERY rare to find anything better than "builder-grade" quality windows in a situation such as that. That would be my reinforcement to the OP in this post as well: if it is not something as simple as the upper sash having drifted down (assuming of course that they are double, not single hung), you are getting to the point where you should start planning for replacement with a quality product. I don't want to sound like a sleazy window salesman in saying that, but unfortunately that is likely the case if you want to see any level of improved performance from your windows.