I run a single user system. 2.63 is working so well, I'd say I have a 99.99+ rate of catching spam with very, very few FP's or FN's. I haven't seen either in weeks. Running with network tests and SURBL's with a few rulesets thrown in. Would there be any advantage at all to upgrading other than that I'd be running the latest version?
If 2.63 is working well for you, you probably don't need to upgrade to 3.01 right away.
However, I would at least upgrade to 2.64 ASAP... 2.63 is vulnerable to a DoS attack from being fed a malformed message.
Nobody should be running 2.63... Nobody.
