I just installed the version 2.5. If the galleries will work as promissed then I won’t go back to 2.3

Update: I dropped version 2.5. Not all plugins are compatible (favatars), there are to few options regarding the design of the galleries (what the heck is “medium”?). There’s no point in rewriting half of the site to get it working. So lets wait and see, and try again in some time.