So I decided I'd had it with the memory leak in 188.8.131.52, and I upgraded my 8330's OS to the hybrid 184.108.40.2068. Nathanix Blackberry Resource - Blackberry Curve 8330 OS 5.0 Installation
Memory leak gone, all was well there. But when I went back and edited the Blackberry.alx file to grab the new themes, it threw up at me and said I had no memory available. Turns out, if you go through and delete all the vendor codes from this alx file, it tries to install T-Mobile's Faves app as part of the Blackberry system files.
After I deleted T-Mobile's vendor entries from the Blackberry.alx file, I was then able to add the themes I wanted.
Then I decided to go grab the 4 free games for 5.0 (Klondike, some word game, Sudoku and Texas Hold Em) and install those: 8520 games/themes for the 8330 (addon/hybrid) (OS5.0) - BlackBerry Forums at CrackBerry.com
I ended up removing the word game and Texas Hold Em after trying those out. Sudoku and Klondike, I kept.
I'm humming along now, and happy. This is a solid build. But I will say that I don't have much memory left. And I didn't have that many 3rd party apps installed to start off with: a handful of Google apps, Evernote, SmartAlerts/BerryBuzz, Pandora, and KaGlom.
Going forward on 5.0, I can tell I will need to sit down and do some math before deciding to install anything new on the phone. I will regain some memory later this week, after I've tested the themes, by uninstalling all of them except my favorites. Even so, this OS is a tight fit.
If you uninstalled 5.0 because of the memory problem, I can recommend this hybrid for fixing that problem.