I don't think that is the case, because without changing anything the problem doesn't occur anymore, but just in case I would like to check that if you can tell me where I should look for charset setting, if its in xml then its already UTF-8, maby there are some settings on the template itself or sometyhing if you could specify where should I look that would be helpful.
As an option is it possible that it was just a temporary glitch of the livecycle server?
Maby others have some more ideas ? or possibilities that you could think of and I could check ?