Top of my list would be:

1. Inability to do a PITR for a single database in a cluster.
2. Lack of support for Large Objects in master-slave replication.
3. Queries that I write are not corrected by postgres ;)

One last thing - it peeves me that many of the people on the forums are 
so bloody clever! It gives me an inferiority complex ;)

Howard.

Howard Cole
http://www.selestial.com

In response to

• Pet Peeves? at 2009-01-29 13:16:17 from Gregory Stark

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