Hi

Is this a production database..is this databse very important..how did you end up with this sort of things ?they seem to very strange but very very interesting thing happened.How can we reproduce it ?

if its not so important you can try this simple hack ...be careful use it at your own risk though

seletct rowid,name from sys.user$

delete name from sys.user$
where rowid= rowid-from-above-query

but if this is a production system dont try my suggestion ..

regards
Hrishy

P.S:now i am expecting lotta of criticism for the above post ;-D