I'm not personally aware of any issues with my site that holds the PEVSoft tools (which currently is unaffected by my website revisions) however I do know that Norton has problems with programs like that due to it's reputation system. However, I do know that some third-party download sites have been known to copy his tools and add bits to it.
If in doubt though, send me details of what antivirus software you are using and what it thinks it's found so I can check it, as I only use the downloads provided by PEV himself
Shane