Quick Scanner question

Hello all,
Yesterday I installed Avast! antivirus Home edition and I noticed this - when I scan a zipped infected file (no password on zip) with Quick scanner through right-click context menu, the virus is detected but none of the delete, remove, repair, ‘move to chest’ options work, ie. after clicking delete the infected file stays in zip.
When I do the same through main program or resident scanner picks it, then it works like it’s supposed to.
Am I missing something? I’m using WinXP w/SP1

Thank you for any information.

Can someone confirm is this a bug or my installation of Avast isn’t working properly?