I recently upgraded the firmware (PalmOne official version) on my unlocked 600 using T-Mobile Internet. Prior to the upgrade I had no connection problems to email or web. For some reason, unless I do a soft reset, all attempts to connect, whether email, web or Express time out and I get the cannot connect to GPRS error message. Once I do a soft reset everything works as it is suppossed to. I had this problem with my 270 and never solved it however it never connected without the reset and the 600 did until the firmware upgrade. My wireless turns off at midnight and goes back on at 6:30 AM via TREO Tools. I guess I could just leave it on all night unless somebody has a fix.