i carn't say that i've heared of this happening. But with IE7's built in Anti-Phising application's and good Anti-Spyware i don't think it would matter to much if your Mcafee site advisor work well anyway.
A good alterantive to "Mcafee site advisor" is SpywareBlaster
SpywareBlaster will add a large list of programs and sites into your Internet Explorer settings that will protect you from running and downloading known malicious programs.
A tutorial on installing & using this product can be found here:
Using SpywareBlaster to protect your computer from Spyware and Malware.
I'm sure this thread's in the wrong forum if it is a Moderator will move it for you. McAfee SiteAdvisor
Or you could use Firetrust Sitehound as a replacement:
http://www.pchelpforum.com/anti-spyw...tml#post136342
@Bugsey, Spyware Blaster is indeed a good app to use, but a completly different type of app then SiteAdvisor or SiteHound.