Lost connection to selected backend (proxyd -> imapd)

[Reinhard Proessler]

Hello 

maybe my posting last week was unclear:

Between our Murder frontend and backend are heavy connection problems:

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>From log under /var/lib/<frontend>/logs/<mailboxname>/26754:  

<1190021110<p7dp SELECT "Drafts"^M
>1190021110>* BYE Fatal error: Lost connection to selected backend^M

Im maillog:

master[26744]: service Fimap pid 26754 in BUSY state: terminated abnormally

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Both machines running RH ES4.0, latest patch applied.
Distance between machine 120km, 4Mb connection.

Any hints or suggestions are welcome!

Reinhard Proessler