I get hit by power outages too frequently to sustain long uptimes. The linux box is at 57 days, which is the longest of my boxes.. My laptop gets rebooted every 8 to 10 days because it gets sluggish otherwise.
I haven't noticed any 10.2.8 differences so far... The security updates in 10.2.8 are a "must have" but by themselves would not have required a restart.. and there aren't 60+ days until panther so it might be awhile until you find another 68 days up continuous uptime.