Hello Martin,
I had a database corruption.
In my current install, I see eleven database files(.db1) along with MF>eleven corresponding index files(.ix1).
Which of your database files got corrupted?
I believe that it was in what you call the "online help", that deleting  
the .IX1 files would help matters.  In this, case it did not.  Oxp rebuilt   the IX1 files the next time the program was launched.
How do you know which one it was?
I dunno.  At that point I was just frustrated that the PKTs didn't get  
tossed and oxp locked up.
What were the symptoms?
Oxp locked up.
Was there some sort of associated error message?
According to the DEBUG log file, there was none!
DEL *.IX1 fixed it.
IMO, that would be a recipe for disaster!
I swear, I read somewhere that deleting the .IX1 files is OK.
But the nodelist config broke.
Here we go *again* :(
Accually, I think I found a serious security flaw in Oxp.  It is related  
to the next message you wrote to me.  I'll make my comments in there.
--- OpenXP 5.0.42
 * Origin:  (2:221/1.58)