Ok, I will post this type of issue to different mail list. 


> pg_ctl: unrecognized operation mode "restar"
The OPTION should be restart, not restar.  So do 
pg_ctl restart          and it will work.

Note that this had  nothing to do with slony. I highly suggest you subscribe
to 
http://archives.postgresql.org/pgsql-novice/ for these type of questions.

Melvin Davidson 
 
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