this is for KDE4 if you have skype in your panel right click it and go to icon settings then click on the tab Application..go to the box Command and remove skype and paste this in there
click ok then restart skype and your old cams should work..
edit: this is not a fix for the quickcam chat..
edit: this will remove the skype icon ..just right click the question mark in panel --icon settings---click on the ? mark and search for skype icon in other ..click it and then OK