SVN Commit error: Can't open file txn-current-lock Permission denied

I can do checkouts, update and such. But when I try to commit changes, svn gives me the following error:

Can't open file '/svn/p/pokemonium/code/db/txn-current-lock': Permission denied

I am using Windows 7 x64 SP1 with latest version of TortoiseSVN.
UAC is off, my account has read and write access, etc.

I can commit fine to other svn repositorys.

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