Screen repaint is horribly slow when Explorer or IExplorer running



I am experiencing a very odd situation. I have an ATI Radeon 9600 AGP
card running Windows XP Pro SP2. The CPU is an AMD 3500+ (I believe),
so it's nice and fast. 2GB of RAM too.

The screen repainting rate is very fast when I DON'T have Windows
Explorer or Internet Explorer running (doesn't matter if it is
minimized or not). For instance, I can play a video and move the window
while the video plays; or I can do a long directory listing in a DOS
window in a fraction of a second.

Once I start Windows Explorer or Internet Explorer, the repaint rate is
painfully slow. When I try to move the window with the video playing,
the CPU pins; similarly for the DOS window doing a long "dir".

I've scoured ATI support and USENET, but I can't find anyone else
having this problem. I even installed a second copy of Windows on the
same machine to see if it was some software I installed, but the
problem is appearing on both installs of Windows.

Other applications don't seem to have the same effect as
Explorer/IExplorer -- I can run Microsoft Office apps, or other apps I
have, and things are still fast. Once I close Explorer/IExplorer,
things speed up again too. I've played with various settings in
IExplorer, but they don't seem to have any effect.

I can post more information on my hardware if that would help, but
being that this seems to be triggered by software I don't know if that
would help.

If someone could give me some insight in where to look next, it would
be greatly appreciated.

Thank you.

Ken

.



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