I haven't had any problems with messages coming or going, but I did test the phone to see if awake after text message and the timer is still going, so I think I'm going to have to use HandCent, since that was the most recommended Text App.
This was information passed on if you dig into the links from Dash's post:
Code
https://www.wckediden.com/f477/hero-tips-tricks-fixes-192720/
Q) How do I know if my phone is sleeping?
A) When your screen is actually turned off, there's no way for to know. However you can check your timer at: Settings < About Phone < Status < Awake Time. Pull it up and then put your phone to sleep. Wait 1 minute and then wake it up. If your awake time has counted by more than 5-10 seconds then your phone isn't sleeping. Also the % should be less than 100%. The lower the better. You can reset the timers by powering the phone off and on again.
It never gave me issues, but to know it's not truly sleeping and things are running, which means power is being pulled form it, is something I want resolved. I will post back to let you know if the timer stops by making the corrections.
--------- New Post Merged on 18/10/2009 at 12:32:18 --------
I added Handcent, which by the way is a great app and something you can easily get at the Android Market for Free. It has more options than the stock. By following the instructions provided here, which again is also found on a link in the above post.
Direct Link for Fix:
Code
http://forum.ppcgeeks.com/showpost.php?p=1239322&postcount=1
My HERO now actually sleeps when it supposed to ;)
Good Luck and hit me up with any questions, thanks.