I have two sites - one with default Twenty Eleven theme, and the other one with some other theme that I found on WordPress.org. Everything works fine, as long as I dont install any plugins:
1) MU Domain Mapping causes installation to change themes for both sites at the same time, there is no way to keep them separate anymore
2) Custom User Registration Lite causes the Admin bar on the top of the page to disappear.
I found the solution to this - just delete all the plugins in FTP and undo any changes in wp-config.php etc, that were recommended by these plugins authors.
Is it always like this? I am new to WordPress and I am trying to get it to work, but it seems like a little bit of an uphill battle right from the start.
Do you think that Multisite verison needs at least another year, before it is going to be free of all these issues etc?
Is there any way to get around all that and get it all to work somehow? (I am ok with php etc...)