The following bug has been logged online:

Bug reference: 2284
Logged by:
Email address: suvarnat (AT) cygnus (DOT) stpp.soft.net
PostgreSQL version: 7.3.2
Operating system: linux
Description: missing sequence number
Details:

if the server shuts down abrupotly because of power failuar or any other
cause then the sequences tend to skip few numbers.
After restarting the postgresql server the nextval of sequence doest match
with the last number.

---------------------------(end of broadcast)---------------------------
TIP 5: don't forget to increase your free space map settings

suvarnat (AT) cygnus (DOT) stpp.soft.net wrote:

This is per design, i.e. not a bug.

--
Alvaro Herrera http://www.CommandPrompt.com/
The PostgreSQL Company - Command Prompt, Inc.

---------------------------(end of broadcast)---------------------------
TIP 2: Don't 'kill -9' the postmaster

On Mon, Feb 27, 2006 at 11:52:19AM +0000, suvarnat (AT) cygnus (DOT) stpp.soft.net wrote:
http://www.postgresql.org/docs/faqs.FAQ.html#item4.11.4

--
Michael Fuhr

---------------------------(end of broadcast)---------------------------
TIP 6: explain analyze is your friend