The topic is what it says. Whenever I try to go to Control Panel --> Add/Remove Programs windows says that it's loading but never finishes. There is no error message, it's just that it never loads.
Also, Windows Media Player stopped loading the startup page because it can't access the internet. Not sure if it's related. Internet has been lagging recently so spyware was suspected, but Microsoft Antispyware found nothing.
I have Norton Antivirus, Norton Internet Security, and Microsoft Antispyware installed. I just downloaded CCleaner but can't differentiate between files that should be in startup from those that shouldn't. Same with the programs listed in Add/Remove Programs.