I actually tried the auto-on / auto-off tip and it worked for me. I have it set to turn of at 5:30am and on a 6:00am.
I usually go to bed with no higher than 20mb (18.6 at the moment). As soon as I picker her up out of her little cradle when I get up for work...my baby is up to at least 28-32.
Unfortunately...this solution does not keep it high for long as it is down to 20 by 10am unless I do a battery pull (im soooo sick of battery pulls btw)
My Storm runs incredibly slow when and only when the memory dips below ~30MB or so, and runs beautifully when its over 45MB. I've noticed, but perhaps it is just a coincidence, that after I enabled the onboard memory manager, the memory is now stablilized between 41MB and 52MB. Before, It would dip down to 7.2 MB, and thats a no bueno..