I don't know shit about CMx.x, but as far as your apps loading, that happens to me, too. There's this one app, "my uploads." WTF is that? Try a task manager that auto-kills apps. I can't think of any in particular, but be careful, it acts like a pc with a unstable OC. The phone will be fast, but kinda unpredictable. I used one that came with a rom, tried it set to aggresive and didn't like it. Switched it to moderate and liked it, then went to a different rom...
Where do you get your roms, besides CM?
At dave...I have the SGS as well. Specifically, the vibrant from T-Mo. Its supposed to be really close to the i9000. Fast as hell, beautiful, and fast. When (if) you start flashing roms, rooting will let you flash without a pc. Rooting also lets you uninstall bloatware. Its not hard at all. Is this your first android? This is my first. Im coming from a treo. I miss it, mostly for the accuracy of the stylus. But android is fun, if not productive. Xda developers is stuffed to the brim with info. Be sure to get to the right section. Remember, there are about 7 variations of our phone, and some things are compatible, while others will cause a world of trouble. Have fun...
Ps. This post came from the onscreen kb.