Update. which is also consistant with the 3GS rev3 iphones.
the wifi isn't working. But everything else is fine. no odd battery drain.
Key item i forgot to mention:
The ra1n jailbreak was done on a clean UDF restore. So i had no apps, and no restore from backup done after the jailbreak then unlock using ultrasn0w.
And recalling the install events, after ra1n jailbreak was done, wifi was available as it was needed to get the cydia to install.
So something with the wifi & ultrasn0w isn't syncing right on the 3GS...