snap.do malware not recognised by AIS?

[chhackm]

Running up-to-date Win 7/64 and AIS v8.
Internet explorer keeps getting hijacked tosnap.do - despite my changing settings back away from it, and snap.do appears in the programs list and cannot be uninstalled from  Windows Control Panel | Programs (uninstall doesn't do anything).  Something has corrupted/removed my old Windows file(s) so I can't restore to an earlier date, either.
However, Avast! does not report anything wrong - even after a boot scan, and I can't find it manually or on a windows search (Start | Find set to ignore indexing).
Another post suggested going to the snap.do website for directions on removal, which seems rather like picking up a rattlesnake to ask how to treat a bite, so I don't think I'll try that!
Any suggestions?

[Pondus]

run AdwCleaner....click delete and reboot....is it gone ?   http://forum.avast.com/index.php?topic=53253.0

also do a quick scan with Malwarebytes....click remove selected if anything is found

[gerwood]

Hi,
Snapdo didn’t hijack your browser. You must have downloaded it when you installed another program. It happens all the time – freeware often comes bundled with other programs. Uninstalling it shouldn’t be difficult. Try contacting their support team: contact@snap.do