For "cleanup and rescan" do You mean cleaning up the channel informations and rescan them?The problem now is that I do not see any EPG for Rai Uno, Rai Due etc... in general for the non-sky FTA channel.
It works for me for rai and mediaset channels (they're included in sky guide).
Maybe you have to make a complete rescan. I also had problems with some channels not having guide. After a complete cleanup and rescan all worked perfectly.
I had in program to do it because now I've also strange situation like this: for many channels (maybe all the HD channels) I have two version of them; one carries the EPG information but cannot be visualized (it returns an error like "no video present") and the other has no EPG info but can be visualized.
mah....
Italy