Glad I found someone else who has this...!
Althought I don't think I've lost text messages, I have been receiving them randomly late (it's like the radio drops off after a short while..) If I text someone it springs to life and dumps all the new texts on. It also does an annoying thing that it disconnects from my works wireless network very shortly after locking the screen then i have to go wo wi-fi and click it again for it to connect. I have the sleep policy set to never and have a static IP address on our network.
If anyone has managed to sort the problem with this device being so idle I would really appreciate to know how you did it, my device is 2 days old....
Ta
Gavin