Upgrade PostgreSQL from 8.0 to 8.1

[Stroller <..hidden..>]

I've just checked my system for updates & the package manager (Gentoo  
portage) is proposing to upgrade PostgreSQL from 8.0.15 (which is what  
I'm using for Ledger-SMB at present) to 8.1.11.

Is there anything unusual between these versions I might need to look  
out for?

Or am I just being paranoid & only major versions (7 to 8) are worth  
worrying about?

Stroller.