Well, if that's the problem ...
Back to Safe mode as an administrator and UNINSTALL the Mcafee.
Then you spend the Kaspersky online.
When you remove the virus reinstall Mcafee.
;)
And yes, sometimes conflicts between antispyware, antivirus and firewalls are produced. So never use spybot and adaware time and has been what has made me convince myself that have zonealarm mars closer to my pc (especially the internet) that do not have it.