Thanks for this find; it lets me read all of the issues before I go buy the device. Though I haven't found it yet, does it state when the 2.0 update is coming? I'm glad that they're getting these issues fixed so fast! (December, January)
I just played with an Eris and saw that it has ActiveSync. Nice! So, can that add-on be put on other Android 1.x phones? I thought it was a 2.0-only thing.
the native sms app prevents the phone from "sleeping" when it is locked and drains the battery faster then you can say eris pwns.
to fix it go into your native sms app, menu, options, turn all notifications off
download the handcent sms app from the market (which is pimp btw)
send one message with handcent
reboot device
problem solved. (hopefully, worked for me)
to see for yourself, go to settings>about phone>status and look at wake time. if it is 100% you have the problem. check it after the fix, it should be 50% or below.