connection closing randomly

[Lior Lew]

Hello,

To weeks ago we began seeing the following behavior in our system. every now and then (at least once a day). some (but not all) of the daemon running on our machine (Version M-11/16/88f) are suddenly getting disconnected. there is not error no core no nothing. also,

1. The session time out is set to infinity
2. So Daemons are staying up
3. there is not relation to the language the process is written in (not all C++ are vanishing and some processes are also written in perl, Java, Ksh ...)

the following is the ps -ef I performed on the processes on the machine after crush and restart. the last one did not get restarted since it did not crush.

nbs7rtg1 18195 1 0 15:42:03 ? 44:50 pm1EnvelopeMT -nPOSTPAID66_2
nbs7rtg1 23445 1 0 15:45:41 ? 0:23 pm1EnvelopeMT -nUEXT_E_YC_66
nbs7rtg1 18001 1 0 15:42:02 ? 18:26 pm1EnvelopeMT -nPOSTPAID62_2
nbs7rtg1 22852 1 0 15:45:30 ? 0:22 pm1EnvelopeMT -nUEXT_E_YC_62
nbs7rtg1 14874 1 0 15:40:14 ? 0:20 pm1EnvelopeMT -nMARK_AND_ARCHIVE_66
nbs7rtg1 15083 1 0 15:40:17 ? 49:42 pm1EnvelopeMT -nPOSTPAID62_1
nbs7rtg1 14705 1 0 15:40:13 ? 0:21 pm1EnvelopeMT -nMARK_AND_ARCHIVE_62
nbs7rtg1 23750 1 0 15:45:48 ? 0:22 pm1EnvelopeMT -nUEXT_P_YC_62
nbs7rtg1 25348 1 0 Nov 18 ?
1293:45 pm1EnvelopeMT -nPOSTPAID66_1


please, any idea will be appreciated since it is causing us lot's of manual work.

Thanks,
Lior