Treolo - Get b17; I fixed the bug that seemed to lose Mailboxes when Summary was on. (Oops! It's Beta!)
And NO, you shouldn't lose all calls and the green arrows shouldn't be on all the time with push. If they are, there's a setup issue somewhere.
You can send me a log if you like; that's usually definitive. Instructions are in the FAQ at
www.chatteremail.com.
Marc
p.s. On Sprint/Verizon, I'd expect to lose 8 - 15% of calls to Voicemail, depending on how many Mailboxes you have (especially if they are online). With GSM (TMO, Cingular), I'd expect around 3 - 8%.