Hi Matthias
A little surprised, and shocked that you are now saying these are the only known bugs.
I've mentioned it numerous times here, as have others and it just seems moderators are blissfully unaware, and choose to remain unaware of the issues many of us are having.
Forum notifications simply aren't working properly, subscribing to a thread can lock up on the ability to start threads (hope that's a known issue)... but as for general users they'd be lucky to see notifications at all. I've not had them from DNN for a long time now! (near a year or so).
Here are some of the relevant forum posts to help your memory:
http://www.dotnetnuke.com/Community/Forums/tabid/795/forumid/7/threadid/214256/scope/posts/Default.aspx
http://www.dotnetnuke.com/Community/Forums/tabid/795/forumid/7/threadid/214608/scope/posts/Default.aspx
http://www.dotnetnuke.com/Community/Forums/tabid/795/forumid/7/threadid/216345/scope/posts/Default.aspx
http://www.dotnetnuke.com/Community/Forums/tabid/795/forumid/7/threadid/219118/scope/posts/Default.aspx
http://www.dotnetnuke.com/Community/Forums/tabid/795/forumid/7/threadid/248276/scope/posts/Default.aspx
http://www.dotnetnuke.com/Community/Forums/tabid/795/forumid/7/threadid/252337/scope/posts/Default.aspx
I spent weeks trying to sort it before you said it was a known bug. And that was back in March this year (I was away the 3 months prior to this).
I, and others can appreciate the work involved... but a lot of us have been waiting over half a year to see a bug fix in the module. Bit of a worry if now we're being told it's not a known issue.