:) I'm back! I tried to delete the spammed posts and publish them again, several times, to see what was happening. As it turns out it seems LJ gives you the chance to post links into your comments but then considers them spam. So I took out the links and voilá, that was it! The links were to a couple of ff's that I really liked, and both were from cacophonylights at livejournal dot com, so if you're interested you can check 'Guess who's coming to dinner' at her Hundersmythe verse and a long fic called 'A change in the weather'; they're both brilliant!