I'm running into a problem with the TV guide in WMC where it will freeze when I use the mouse scroll wheel to navigate to the bottom of the list. It happens one in every three times that I try it. It's very weird, I lose control of the interface. The graphics used in the guide continue to animate (the moving highlight around the guide objects), I can minimize and maximize the screen but, if I fullscreen it I lose total control of the window. I have to kill the eshell process and launch WMC again.
I'm running a Hauppauge 2250 on a Nvidia Nforce 780i motherboard, Intel Q6600, OCZ Vertex SSDs, MSI GTX280OC 1GB card (185.85), 8GB memory, Windows 7 RC1 64bit, Logitech MX1100 mouse (Setpoint 4.72.40).
In other news, Windows 7 RC1 is the shizznit. It's the Windows I have (we've all) been waiting for! I'm amazed at how stable this OS is, and I don't use it for just checking email and blogs, this thing is used and abused. :)
Any ideas on what the cause could be?