Opera problem

[Miketoberfest]

Hello everyone! Looking for some help...

My opera keeps freezing everytime i go 'back'. The browser freezes and i have to close the app with the 'x'. Than if i try and re-launch the browser nothing happens. Have to reset phone to have it work again. Im running stock bell rom. I also just upgraded to the 2649 build hoping it would solve the problem but to no avail. Any help would be much appreciated.

Thanks!