Frustration with the Backlight Timeout

[Despiser]

I've set the Backlight Timeout in the reg and it did in fact seem to work correctly for a couple of days but today it reverted back to timing out every 30 secs. I've checked the reg again and my setting is still as I set it a couple of days ago.

I use Mobile Shell 3 but other than this the rom is pretty stock.

Anyone experience this and find a solution?