I had (I say "had" because I've since put more stuff in it) a barebones windows 7, 64 bit. Clean install not an upgrade, not purchased as part of a package from Dell or something.

I wiped my drive and installed 7

Again, barebones with no Antivirus, no special firewall software, no other software. Nothing

Poser 8 was the first install.

It created the temp file even then.

I actually know this because I installed Win7 partly as a way to see if this problem would go away because it happened in Vista (32bit) as well.