Same here. Two different top-of-the-line Verizon/Motorola phones, both have an average uptime of a few days. Generally due to a crash, but sometimes because performance is so terrible I have to reboot it. And thanks to the carrier's lockdown (for stability, they'll surely claim), I can't actually debug any of the performance issues.

If anybody knows of an Android phone that actually works reliably out of the box, I'd be excited to hear about it.