Hi my uptime is ~ 7 days now, as I remember I haven't rebooted it since the firmware update. It was much longer before But the update seems to solved my re-occuring problem with exchange sync stopping (or more like never finishing) that used to be my reason for a reboot...

Battery life is depending on your usage pattern, it can be anything from 6 hours to 3 days. For me it easily last a day with 2 email account syncing, constantly turned on Wifi, mobile net, BT (~ 1 hour/day on BT speaker and ~ 30 min talk time on this), moderate phone usage, some SMS, light web browsing and so.