I was messing with the .svn/entries file in one of my local working copy folders, also I rm -rf a folder and regenerated again (I'm using symfony admin generator) , long story, but the fact is that I think I screwed up something and started to get this error when trying to commit:
# svn commit -m "backend modifications"
svn: Commit failed (details follow):
svn: MKCOL of '/projects/cms/!svn/wrk/5ca09002-f34f-0410-890e-9511925f86a5/trunk/apps/backend/modules/comment': 405 Method Not Allowed (http://svn.calipso.com.co)
After some googling, I found it could be some proxy problem, but I wasn't using a proxy. Later I found that this error could mean that
the directory already existed in the repository and couldn't be recreated again, so my next step was to delete the folder from the repository (svn del ...) and try to do a fresh commit after recreating the folder and files included in it, and this worked ;).
I hope this helps some lost soul out there.