[yhbae01]

Originally Posted by mercado79

I'm temporarily running a custom ROM built with Inda's kitchen while I wait for the next EnergyROM release, but... he has a shortcut in one of the menus that literally says, "Enable opera rotation". I'll see if I can get it to you.

In the meantime, here's a thread over at XDA that might help:

http://forum.xda-developers.com/showthread.php?t=439136

They mention two registry keys that play a role:

HKLM\Software\Opera\GSensor\IdleTime

HKCU\Software\HTC\HTCSENSOR\GSensor\WhiteList

Hope this helps.

Thanks!