iTunes Match never connects on iTunes startup
This is the lovely non-descript icon sitting next to my Music library every time I start up iTunes. After startup, I don't have the ability to add songs to, update or download from iTunes Match. I can click the icon and it starts swirling like a barber-shop pole, but stays that way forever. I have to actually turn iTunes Match off then turn it back on again to access my music in the cloud.
I've installed iTunes on other computers, as well as virtual machines on my current computer, and they all work flawlessly the first time.
I've uninstalled and reinstalled all Apple software (including all the little things like Bonjour... basically everything published by Apple has been deleted and reinstalled), nothing seems to work.
I suspected it was my WLAN card's drivers (I have an Alienware laptop with a Bigfoot Killer 1103), as they initially caused problems with iTunes 10.5, but after uninstalling them completely, shutting off my WLAN card and connecting via cable to my router, I still get the same problem.
My OS is Windows 7 x64. I installed iTunes on a Win 7 x64 virtual machine and it worked just fine, so I don't think it's the OS.
Has anyone else had the same problem?