walterbays writes with news of a worm spreading to Windows PCs through Skype's IM. The worm is variously called Ramex.a and Pykspa.d. A poster on a Skype forum explains how to remove it. "After hijacking contacts from an infected machine's Skype software, it sends messages to those people that include a live link. Recipients who blithely click on the URL — which poses as a JPG image but is actually a download to a file with the .scr extension — wind up infected."