I was surprised to find that my anti virus scan last night found a threat. It reported it as a virus and quarantined it. The file was from BigFish and it was:
BigFishGamesCache\upgrade\downloadedtest_F6066T1L1.bin

I have been a BigFish member since 2007 and was disappointed. Is it actually a virus or are they looking for information on my computer?

It's probably a false positive, where a particular file resembles a known threat. Most AV software allows you to upload files for examination, send it to them and see what they say.

Thanks Inland, I'll try that.