Many times have we been here, so apologies for rehashing what may/may not be obvious.

Machine: DIY Asus M2N-SLI mb, AMD 2.1GHz CPU, 2GB ram, GeForce 7600 GT video, XP-3 os, Logitech radio/laser mouse.

Problem:
Historically has been working fine for about 5yrs. Recently, works most of the time, but gets just sticky enough to cause heartburn. Left button intermittent - worse than heartburn. Seems more prevalent when working within a window compared to DESKTOP. I've tried the Win GENERIC driver, the driver that came with the mouse, and the most recent drivers from Logitech - no difference. Batteries are new and fresh. OPTICAL window has been cleaned. Different pads have been tried. Device MANAGER has been monitored and fiddled with. No listed IRQ conflicts. Etc. Best guess: is this a system problem or a dead mouse? Unfortunately, I don't have another mouse to try for comparison. They are cheap, so I could just buy one, but I'd like a more insightful approach, if possible. Thanks for any and all comments.

...robertNo way to answer your question until you try a different mouse.I'll dig up a mouse, try it, and report back. Thanks.

...robertBuy a new mouse...I brought my work mouse home. Seems to be a big improvement. I'll buy a new mouse.

...robert There you go.You don't clearly define what "sticky" is, but it's possible since the original mouse is wireless that there may be some interference, causing the signal to not come in clearly.Well, lots of good thought. Thanks. That said, a new mouse fixed all problems.

...robert