Samsung Captivate :: [issues - Froyo Update

I'm running JH7, and am having some issues. I'm just curious to anyone who has upgraded to leaked Froyo if any of these stupid problems have been fixed. I'm sorry if this is somewhere in a changelog thread, I couldn't find it!

1) Spontaneous shutdowns - Yeah... It's pretty effing annoying to wonder if my phone is gonna wake me up, or if I'll miss an important call because it decided to turn itself off.

2) Randomly changing voicemail/calendar notification tones - Just for fun, my phone decides to change the tone it will use. I'd like to be able to pick my calendar notification noises, too.

3) Emails double sending, and putting the same email address in the "to:" field 4-6 times - This one may need more explaining from me. Let me know if it does.

4) Calendar loses appointments - This one is awesome. I *may* have made the appointment in my phone so I wouldn't have to remember it on my own, but it's cool when meetings disappear. Unless it makes me look bad. And it does.

5) Exchange support sucks - Losing all my emails and the exchange account? Good stuff.

If the leaked version fixes any of these issues, I'm excited. If it fixes all of them, I'm ecstatic.