I have been receiving this includeit.info message whenever i open a new browser window. I am using firefox 13.0.1 on windows vista.
I have searched online an see a number of fixes on this forum but they are individual and require running a number of programs and posting your log files.
I suspected the problem is due to a toolbar or addin so reset my firefox browser. I now no longer get the problem. Its a quick fix but the infected files still remain.
To reset firefox select firefox> help> troubleshooting information. in that window there is an option to reset.