If you use Internet Explorer then you should pay close attention to this…
An exploit to security holes in Internet Explorer (even if you have XP SP2 installed) has been posted by a group called GreyHats. They are not happy that MS has not fixed the exploits since they were made known in October 2004 and figured they can increase the speed of a patch, but in the process I expect they will only succeed in screwing alot of innocents.
If you run with least privledge then life is much better for you then if you run as an administrator on your web surfing box. Either way I suggest you vist the test page provided by Secunia and see the likely bad news.
If you are vulnerable, be careful where you go between now and when you install whatever patch comes out.