Infection Blocked

hi, I keep getting this avast pop up every minute or two and its driving me nuts.

http://s.vb3k.com/crossdomain.xml

what it and how do I get rid of it? thanks

Please make it a dead link by changing http to hxxp.
Or some unsuspecting user may get an infection.

Could you provide a screenshot of the pop-up?
Right click on the avast tray icon>click “show last pop-up” Then take screenshot.

I get this too recently!! Help! This is the only result that came up when I searched this issue, I don’t know what to do. It also makes my computer run slow after so I’m getting scared… thank you for any help.

Start a new thread here https://forum.avast.com/index.php?board=4.0
Follow instructions here https://forum.avast.com/index.php?topic=53253.0

It seems he is running Mac OS … if so, none of those tools will work

The the OP should post here https://forum.avast.com/index.php?board=5.0

Yes I have Mac OS 10.6.8. Still getting this threat pop-up sometimes, though went a whole day without it, too, but showed up today again.

If you expect help, Please post your question in the appropriate Forum as stated by Para-Noid. Thanks