Last week I removed McAfee Anti Virus Plus from my laptop (Win 7 SP1 64 bit) and installed Bitdefender Internet Security 2013. The installation was painless; only minor glitch, Pay Safe desktop shortcut was not automatically generated, so I created one myself. BIS 2013 worked flawlessly. But... refused to allow other programs to update. Downloads either never happened or were terminated part way, or files were corrupted in transit. Strangely, Dropbox and Windows update both worked OK. Sadly, I've gone back to McAfee. I'd much rather use Bitdefender as it offers superior features to McAfee, so if any one can come up with a solution to my problem I'll be most grateful.