Panda Cloud icon is utterly unresponsive to cursor. Possible cause?

The icon is in my lower right corner, and it will not not bring up any right-click menu no matter how many times I click on it. I have never had an icon behave like this.

I suspect Panda may be interfering with my screenshooting, but I can't investigate. I'm fed up enough to uninstall.

It's not Webroot's fault because right now I have Webroot shut down.

One of the Panda processes has been so burdensome on CPU that I've been having to suspend it with Process Explorer.

Back to avast!, I guess.

Windows XP
Home Edition
Version 2002
32-bit
Service Pack 3

Dell DIMENSION DIM2400
Intel(R)
Pentium(R) 4 CPU 2.66GHz
x86 Family 15 Model 2 Stepping 9
2.05 GB of RAM
Graphics Card: Intel(R) 82845G/GL/GE/PE/GV
Graphics Controller, 64 Mb
Hard Drive Size 114.4GB
Free Space was 35.8GB; now 22.0GB because after backing up My Documents on Google Drive, Google Drive has duplicated the whole darn thing on my hard drive
Motherboard: Dell Computer Corp., 0G1548
Antivirus : Panda Cloud free, Webroot Internet Security (Don't croak; Webroot is a compatible AV.)