Vista - Trojan horse

Perhaps someone can give some light on this: I am using AVG 8.0 Internet Security and today after I downloaded Microsoft Windows Live Onecare Safety scanner I get a popup from AVG Resident Shield detection saying the following: (Infection)Trojan horse SHeur.CJVO (Object) C: Program Files\Online Services\msn90\TOUR\MSN 9.EXE (Process) C;Program Files\windows Live safety center\WLschost.EXE. I put it in the vault and then deleted it. I went to the security sites at Microsoft, had 500 different Trojans and the web but no luck. I ran another scan after this and it was clean. If you have any information on this please reply. Thanks.

Could be a false positive cause I wouldn't know why Microsoft would give you a tojan for.

I think you are right on as I have had this happen a couple of times before when checking out different anti-virus. I guess they both want control and I use the Safety scanner to check for errors but it did find a Trojan once. I went to Programs and Features where it usally is after a download but it was not there. Thanks for your answer.