BB TOUR SEVERELY DECREASED BATTERY LIFE AFTER 5.0 OS UPGRADE

I have read several other posts on this subject, but want fresh input here. Since upgrading to the 5.0 OS a couple of months ago I have noticed a big decrease in battery life. It used to last 2 days off a full charge and I do a lot of data, calling, etc. This was not a problem with the 4.7 OS. I got a replacement battery, then bought a spare battery, then got a replacement Tour last week as it is under warranty and Verizon convinced me it was the device itself.
The new Tour came with 5.0 loaded and the battery life is the same. I now am convinced it has to be the 5.0 OS, because we shouldn't have to go through all these power saving strategies that we didn't have to before the upgrade. I like some of the things that you get with the 5.0, but if a battery that doesn't last a full day is the trade off, no thanks.
Anyone know of any other fix, or is it best to downgrade back to 4.7?

I have the same problem.  I have the 8900 and just upgraded to v5.0.0.822 this week.  My battery only last a 1/2 day (from 7 am to 3 pm) when it use to last 2 days before the upgrade.
I have my screen lighting set to 10%.  This helped in the past with battery life.  The only processes running in the background are: 
Call Log
BlackBerry Messenger
Home Screen
Browser
Messages
Any solutions?  Is there any type of help desk I can call?

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