This only seems to happen with the latest version of Skype (4.2.0.11-1). Installing an older version of Skype (2.2.0.35-1) solved the problem (although it introduced some others).
The webcam is a Microsoft LifeCam VX-2000 connected via USB if that helps at all.
I am having this problem as well with an old Dell notebook running Xubuntu 12.04.
'lspci' output:
00:02.0 VGA compatible controller: Intel Corporation 82852/855GM Integrated Graphics Device (rev 02)
00:02.1 Display controller: Intel Corporation 82852/855GM Integrated Graphics Device (rev 02)
This only seems to happen with the latest version of Skype (4.2.0.11-1). Installing an older version of Skype (2.2.0.35-1) solved the problem (although it introduced some others).
The webcam is a Microsoft LifeCam VX-2000 connected via USB if that helps at all.