It is going around as GENUINE VIRUS WARNING called jdbgmgr.exe
IT IS A HOAX.
Go to: http://www.symantec.com/avcenter/venc/data/jdbgmgr.exe.file.hoax.html which is a Symantec page with full instructions. I found this explanation on Google after receiving a well meant email to warning me of this virus, but I have been stung by something similar before.
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