The following bug has been logged online:
Bug reference: 2284
Logged by:
Email address: suvarnat(at)cygnus(dot)stpp(dot)soft(dot)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.