I read mostly in the crackberry forum about application memory loss, and I experience it too. I did find however when I stopped focusing and worrying about this that .109 had no loss in speed and that if I just check maybe 3 times a day it ends up around .30mb or so.
If you watch it like a hawk it can be scarry, even going down as far as .19. However if you just have memory cleaner on and let it go it will go back up, I've seen as much as 11 mb in memory. And even the one time it went down to .19 I had no performance problems.
I do use quickpull for a soft reboot each night. I just think people are making too big of a deal watching this memory issue. Quit watching the pot boil, people.