I use to have a quickcam fusion webcam from logitech and recently upgraded to webcam pro 9000. After many experiments and searching this forum and logitech's forum for answers, the problem seems to point at Skype users. The problem? Voice speeds-up during the initial voice chat with someone and when performing the first echo-test with Skype.
I recently changed the compatibility to XP SP2 for Skype. Voice chat works on the first call.
IMO the problem is not the logitech drivers
or sofware, nor is it with Windows 7 32 or 64. I "think" it has to do with compatibility between Skype and Logitech Pro 9000.
What say you?