Namecoin Problem

[huggybear]

Hello,
i registered some Domain names, some of these were listed after 12 Blocks but some of these are not listed either 350 Blocks after.
If i try "name_firstupdate" again or "name_update" he show me following error message:

Code:

error: {"code":-1,"message":"there are pending operations on that name"}

if i use the command "deletetransaktion <idtx>" the only effect was my balance going up but the error code remains.
its seems also that i can`t "name_update" my existing Domains.

I has deleted the namecoin folder and reloaded the blockchain without an effect.
I have no idea...  what means the command name_clean?

sorry i would post the topic in "alt coins" but i have no permissions to post.