hi mate
its doing exactly the same on mine, im just going through all the possibilities, and have been for last hour or so.
1stly, have you got all pop up blockers turned off and script blocking disabled in your antivirus/firewall software?
2ndly, download and install this file from microsoft
here
3rdly, ignoring your antivirus software, download this program and do a full system scan
here
try these 1st, and let me know how u get on.