Pecan is know to be troublesome when used on 3G networks, regardless of operator.
Many messages back and forth drop and even the service itself drops out at least every 15 minutes. Very annoying.
For some reason I can not even have Xchat (IRC) running aside Pecan for it will simply stop receiving and sending data.
No problems on WiFi though.
Then I switched to Haze and all my problems on 3G are gone. I can even use Xchat on the side without it glitching up when the Haze plugin is active.

I did read somewhere that Haze is not as battery friendly as Pecan. Is this true?