Gmail with Push on iPhone Using Prowl: error message from the python script

Below are error msg for lester chan's python code, only the domain app version. It cannot run overnight without any problem, which make it really useless ... Any better push gmail solution for iPhone, besides Google Sync, which needs an exchange account? Any one has a better implantation of Gmail with Prowl? Thanks!

24:29.15 redr last 20 imaplib2 reports:
  24:29.20 hdlr last 20 imaplib2 reports:
Got an event!
Exception in thread Thread-168:
Traceback (most recent call last):
  File "/usr/lib/python2.5/threading.py", line 486, in __bootstrap_inner
    self.run()
  File "/usr/lib/python2.5/threading.py", line 446, in run
    self.__target(*self.__args, **self.__kwargs)
  File "main.py", line 68, in idle
    self.dosync()
  File "main.py", line 73, in dosync
    retcode, messages = self.M.search(None, 'UNSEEN')
  File "/home/USER/app/gmail_and_prowl/imaplib2.py", line 831, in search
    return self._simple_command(name, *criteria, **kw)
  File "/home/USER/app/gmail_and_prowl/imaplib2.py", line 1352, in _simple_command
    return self._command_complete(self._command(name, *args), kw)
  File "/home/USER/app/gmail_and_prowl/imaplib2.py", line 1076, in _command
    raise self.abort('connection closed')
abort: connection closed

Shutting down
Traceback (most recent call last):
  File "main.py", line 132, in <module>
    M.close()
  File "/home/USER/app/gmail_and_prowl/imaplib2.py", line 562, in close
    raise self.error('No mailbox selected.')
imaplib2.error: No mailbox selected.

Exception in thread Thread-1204:
Traceback (most recent call last):
  File "/usr/lib/python2.5/threading.py", line 486, in __bootstrap_inner
    self.run()
  File "/usr/lib/python2.5/threading.py", line 446, in run
    self.__target(*self.__args, **self.__kwargs)
  File "main.py", line 68, in idle
    self.dosync()
  File "main.py", line 73, in dosync
    retcode, messages = self.M.search(None, 'UNSEEN')
  File "/home/USER/app/gmail_and_prowl/imaplib2.py", line 831, in search
    return self._simple_command(name, *criteria, **kw)
  File "/home/USER/app/gmail_and_prowl/imaplib2.py", line 1352, in _simple_command
    return self._command_complete(self._command(name, *args), kw)
  File "/home/USER/app/gmail_and_prowl/imaplib2.py", line 1076, in _command
    raise self.abort('connection closed')
abort: connection closed

Shutting down
Traceback (most recent call last):
  File "main.py", line 134, in <module>
    M.close()
  File "/home/USER/app/gmail_and_prowl/imaplib2.py", line 562, in close
    raise self.error('No mailbox selected.')
imaplib2.error: No mailbox selected.

Another python script using Prowl push service to check Gmail is gprowl. It fails even more frequently - just stall there!

:-(