Thanks Bruce,
I hadn't seen that but it certainly looks genuine and an important issue for all FS2004 and FSX users as so many programs use FSUIPC, our own Flight Logger included. So I would recommend all users download it as soon as possible. I'm stickying this topic for all to see.
The newest version of FSUIPC (v3 for FS2004, v4 for FSX) can be downloaded from Pete Dowson's pages
HERE.