I have some McAfee archived data file on my computer which is as big as 18GB. Actually what is this data? Can I delete them as they are holding gigabytes of space? If I delete them would it harm me in any manner. Appreciate if some one can throw some light on this and make me understand.

Thanks
Keshav

I'd delete them if they're that big. They can't contain any useful data. If that causes any problem at all, uninstall McAfee, delete everything that you can find related to McAfee. Download CCleaner and run the registry cleaner part of that and delete everything it finds. Re-run CCleaner's registry cleaner and delete everything it finds until it finds nothing (usually two scans, sometimes three are required). Then, reinstall McAfee.

If that causes you any problems, there are a number of antivirus products that, I believe are better or at least as good as McAfee and they are free for home use.