Hi salty, welcome to the forum. Panda is kind of a resource hog, so it may be causing some conflict, in your computer. I would uninstall it and see if your problems disappear. If the problem disappears, then I would have to suspect Panda. If you want a good AV program, get AVG Free.
Perhaps, you could tell us more about your computer system, so that we can better help you.
Here is a list of programs I recommend people have:
I only list here, the free programs that I have used and I’m satisfied with, I know there are other great programs, but these are just the ones that I use, and can verify, as being worthy.
SYSTEM INVENTORY
Everest: http://www.lavalys.com/products.php?lang=en
SPYWARE
AdAware: http://www.lavasoftusa.com/software/adaware/
Spybot S&D: http://www.safer-networking.org/en/index.html
SpywareBlaster: http://www.javacoolsoftware.com/spywareblaster.html
Microsoft AntiSpyware (XP only): http://www.microsoft.com/athome/security/spyware/software/default.mspx
VIRUS PROTECTION
AVG Free: http://www.majorgeeks.com/download886.html
VIRUS and SPYWARE DETECTION
Ewido (XP only - trial version): http://www.ewido.net/en/
HijackThis: http://www.majorgeeks.com/download3155.html
ONLINE HijackThis ANALYZERS
HijackThis analyzer #1: (website) http://www.hijackthis.de/index.php?langselect=english
HijackThis analyzer #2: (website) http://www.help2go.com/modules.php?name=HJTDetective
HijackThis analyzer #3: (website) http://hjt.iamnotageek.com/
ONLINE VIRUS SCAN WEBSITE
Trend Micro: http://housecall.trendmicro.com/
Miscellaneous Tools
Starter: http://www.snapfiles.com/download/dlstarter.html
Icon Restore: http://www.majorgeeks.com/download4125.html
Erunt (XP only): http://www.larshederer.homepage.t-online.de/erunt/
MemTest86: http://www.memtest86.com/
A-Squared: http://www.emsisoft.com/en/software/download/
CWShredder: http://www.softpedia.com/get/Intern...WShredder.shtml