A relatively mild virus that spreads by infecting the Delphi programmer tool, and thereby infecting any program created with that tool, has been recently identified in some popular downloads.
According to Kaspersky, the Induc virus doesn't carry a malicious payload, and is therefore likely low risk. But the virus has not been detected until recently, and spreads by first infecting versions 4 through 7 of Delphi. Instructions for manually identifying infected Delphi versions are available from delphipraxis.net.
So if your antivirus program suddenly begins to warn about a program you've had on your PC for some time, it might be Induc and not a false positive. Andreas Marx of AV-Test.org, a German malware testing outfit, wrote that Induc has been discovered in versions of the Tidy Favories and Any TV downloads, for example (Tidy Favorite's developer has put up a notice).
Again, the virus doesn't currently appear to do anything malicious, but it's still not something you want sitting around on your hard drive. If you want a second opinion to back up your current antivirus app, both F-Secure and Kaspersky currently detect Induc, according to Marx, and both offer free online scans (though Kaspersky's will only detect, and not remove discovered malware).