there seems to be a fairly new virus going around lately that I come across more and more, some may know it as the Ukash virus but most just see the AFP logo, this is a bit of a pain to remove if you don't know what you are doing as it lock the screen and wont allow any apps or even the task manager to run, it also works in safe mode.
please don't be fooled! and for the love of money! don't give them your credit card details!
here is an AFP site regarding the virus: here