I still do not understand why the article says that the IS should be disabled, while using a tripod. May be it is not needed, but what harm can it do if it is on?
Can you or anybody explain why?
This topic has been discussed at length recently: http://forums.steves-digicams.com/fo...amp;forum_id=2
IMO the "switching off IS for tripod use" advice is mostly obsolete on current cameras. Also, IMO the referenced article is too generic to be used for anything other than a starting point for your own experimentation.
Again, if you can post a couple of photos you're dissatisfied with it might help identifying the problem.