[ILUG] extremely slow pop3, but imap is fine

[Kae Verens]

hi guys,
   extremely slow POP3 in Dovecot. IMAP is as quick as it usually is.

happens in both Outlook and Thunderbird.

using telnet, I see that smaller emails download pretty-much immediately, but some larger ones don't even start, or 
stutter along.
ie: in the list I'm testing, "retr 7" (a 7907B file) downloads quickly, but when I "retr 10" (a 130815B email), 
/sometimes/ nothing at all happens and the session times out after a minute, and other times, the email is returned 
/very slowly/ with long pauses every now and then (sometimes causing a timeout)

any ideas?

kae