I finally managed to get all of the kinks worked out of the upgrade from our old phpBB2+CH install to phpBB3. Specifically, 3.0.14 as 3.0 and 3.1 are currently separate branches, each being kept updated by the authors so far. I will look at the conversion to 3.1 later if it becomes necessary to keep receiving bug fixes and security updates.
All user groups, permissions, forums, posts, private messages, etc etc etc... are transferred. Even the forum categories are all there. The one drawback is the current default phpBB3 themes that are installed. It treats our old pure categories as just new tables with every forum listed just as any other. Instead of hiding them under the category link. I will look into this later.
As for the front page. It is not yet done. However, I know from usage statistics that most of you bookmarked this forum index and almost never see the front page. You shouldn't be missing any major functionality. Even the WIKI is a link at the bottom of the index here.
And finally, there are still some files being re-uploaded. Namely downloads. They'll be done some time tonight.
Please only post bug reports in the following forum as new posts. DO NOT POST BUGS HERE!Forum Bug Reports