"unload lengine" -> server locked

Hi,

it's now the second time that lengine fails to write qeued events to
it's mysql logging channel, after typing "unload lengine" at the NW6.5
server console. Unfortunately, lengine also spams the console with
messages that should propably go to the logger screen instead (see
screenshot) so it's not accessible anymore. The server stays responsive,
though (in term of file access, other apps) and it's still possible to
query the mysql logging channel from iManager (so mysql doesn't seem to
be the cause of this).
Last time I waited more than 12 hours for lengine to finally unload, but
nothing happened. And issuing a "restart server" from NRM does not do
anything, either, seems as if all kind of console commands are blocked.
All I could do to regain control over the machine was a hard reset :-(
Any ideas what might cause and how to avoid this? Or send me a working
copy of taskmgr.nlm, maybe? ;-)

Thanks Lothar