[Dovecot] ?? Error: child 1064 (imap) killed with signal 4

After noticing a commit to the HG repository,

http://hg.dovecot.org/dovecot-1.0/rev/f88b1e225be5

about,

" We didn't update last_output timestamp with long fetches, causing Dovecot to idle-disconnect the client."

I chekced out the latest from the DOVECOT-1.0 repo, and built again.

Unfortunately, this problem still exists. Login simply disconnects.

Any help, anyone?

-- Ben