Problem with screensaver/sleep

Ever since upgrading to Snow Leopard a few months ago, I have had a host of problems. I have given up on the freezing issue, since I've read through these forums a lot, tried practically everything, and nothing has worked.
But this is a problem I can't seem to find on other posts. Instead of my computer screen dimming, going to screensaver, then after a while to sleep as it is set up to do, it will dim and then quickly go straight to sleep. When it does this, it will not wake up. I will touch the trackpad and the cursor will show up, but the screen remains black. I am forced to reboot. Combined with the freezing issue, this can lead to several reboots a day.
Because I don't want to mess with the settings for screensaver and sleep too much, I just run Caffeine when I am using my computer. I don't see this as a permanent solution, obviously. A computer needs to sleep.

I have had the same problem since upgrading to 10.6.2 I have had my laptop for over 6 months and have never had this problem. I install 10.6.2 and now I have the problem 3-5 times a day. Once my my display/computer go to "sleep" I often have to reboot. This isn't even from shutting the lid, I generally keep the lid up and the power plug in. I found a bunch of sleep issue dealing with closing the lid, but I am not sure if the fixes for that are the same since my issue is not necessarily associated with closing the lid.
Anyway, one of the suggestions is to go into the Energy Saver prefs and uncheck the "wake for network access" option and the "automatically reduce brightness before display goes to sleep option" I just tried this today so time will tell if it works or not,

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