Reinstalling userforms and flushing the cache worked! I was sure of having done before, but well, as long as it worksâ€¦ There was something broken with the styling, since I'm still getting some strange alignement in the CMS fields, but it's my theme's fault, I'll fix it.
willr, can you tell us exactly WHICH part of the svn trunk has the newest *working* versions of spamprotection, mollom & userforms so that we have a "known good" basis to start with. That way, if there are any problems we know it should not be in the code.
See my thread http://www.silverstripe.org/all-other-modules/show/264075#post264075 for the zip files. These are known to work as we run these 3 on our sites. If you have any issues with those please make a ticket before you release stable versions