Share your experience!
i had a problem in calling and what i did is to repair software using PC companion
PC companion----- suppor zone--------- update------ Repair software
it really works and the mobile became perfect (except for the lagging of the call log) Good luck 
The call app bug has been fixed in the .100 firmware update.
Try before to give this sentence
1) restart the phone.
2) run shazam to recognize something outgoing call start with 3 sec of delay and incoming call has one ring soundless and 2 sec to connect with the caller.
3) run viber make one-two call outgoing call start with 6 sec of delay and incoming call has two ring soundless and 2 sec to connect with the caller.
Continue to use the phone it'll be arrive very easily to: outgoing call start with 12 sec of delay and incoming call has three ring soundless and 2 sec to
connect with the caller
You can use also skype, voice dialer and ...
OTHER TELEPHONES WITH JB DON'T HAVE THIS BEHAVE
The stock dialer used to lag on the .400 update like hell ( I DONOT USE ANY OF THE APPS U MENTIONED ABOVE STILL IT WAS LAGGY).
Now on the .100 update it does lag sometimes but that is negligible and the dialer is perfectly usable.
I think alexdon also had the same experience so thats why he commented so.
Thanks!