Latitude E6420 Integrated Webcam Problem

Hi,

I can not seem to get the integrated web camera on my Latitude E6420 working properly. It works fine in my web browser at times, on sites like this http://vyew.com/s/browsertest/, but not at all in applications like Dell Webcam Central and Skype.

Are there any other drivers I can try installing except the ones detected automatically by Windows 7? I have had no luck in finding such.

Thanks in advance.