As part of their service, my ISP (ATT Worldnet) provides a free download of Spysweeper (a product of Webroot Software Inc.). Their current version is 3.5, which I have. For several months, I have been unable to download updates to the Spysweeper definitions file. The download is always aborted with the following error message: "Your spyware definitions have been corrupted. Your backup definitions will be restored. This problem is most likely being caused by an incompatibility with a firewall product . . ." I have tried to update the definitions with my firewall and anti-virus disabled, but get the same message. I reported this problem to Webroot. They replied that other users had reported the same problem, and that technicians were working on a solution. They suggested I download the program files again and re-install; they also sent me a copy of their current definitions file. After following all their instructions, the problem still persists. I reported this to Webroot, but they no longer respond. If I try to do a status check on the problem number, I receive a message that I am not authorized to view this information (ticket #693-1614305). I am using AdAware and SpyBot Search and Destroy in the meantime. System is Windows ME, Sygate Personal Firewall, Norton anti-virus 2005. Sorry for the lengthy post. Has anyone else had similar problems?