Key Revoked: Retail version

[Blackbeard]

I've been playing since late May/early June (whenever the retail version was released in the UK ) with no problems, but last week my Key was revoked for no apparent reason.
Things I've tried so far to remedy it:
1: asked Bert.
2: searched this section of the forum for answers
3: wracked my brains to remember if I'd given out my keycode to anyone - negative.
4: " " " " " " " " " " " let anyone near my CD Rom case - negative.
5: tried authenticating about 50 times since
6: tried reinstalling the game - THRICE!!
7: asked MOR.
8: Emailed IV. no reply.
9: taken off my spam filter, Emailed IV. awiting reply.
10: ...and a few things I've probably forgotten.

Has anyone else had this happen to them, and if so, can you tell me how the problem was fixed? I would very much appreciate it. Thank you

[Blackbeard]

Thanks all who read the post - I'm sure you would have helped if you could.
IV. have given me a new Keycode. They said my old one was probably compromised.
As I'm 110% certain that I haven't given out the code, or allowed anyone near to my computer or Cd Rom case, I'm flummoxed as to how this might happen
Anyway, all's well that ends well, and thanks IV for replying so quickly - and, well, Defcon of course