Postgres: writer process !? Time of process not to long???

Hi,

What exactly does the postgres: writer process ?? Only on one of the servers the reported time of this process always rises very much(in this example 32 Hours....) and the postgresql ist was restarted 2 days ago. I find it odd, because I have this behavior only on one system. Is this normal?

I have also a replication on one of the dbs.

ps aux | grep postgres

postgres 2467 0.0 1.6 546624 17172 ? S Oct12 0:31 /usr/bin/postmaster -D /usr/local/pgsql/data
postgres 2516 1.1 48.1 547924 495324 ? S Oct12 32:49 postgres: writer process
postgres 2517 0.0 0.2 16996 2740 ? S Oct12 0:02 postgres: stats buffer process
postgres 2518 0.0 0.1 16188 1944 ? S Oct12 0:02 postgres: stats collector process
postgres 3046 0.0 2.3 550892 23900 ? S Oct12 0:08 postgres: slony mps 127.0.0.1(32771) idle
postgres 3053 0.0 2.2 552056 23048 ? S Oct12 0:06 postgres: slony mps 127.0.0.1(32772) idle
postgres 3054 0.0 8.9 551176 92004 ? S Oct12 0:05 postgres: slony mps 127.0.0.1(32773) idle
postgres 3055 0.0 2.2 549980 23024 ? S Oct12 0:40 postgres: slony mps 127.0.0.1(32774) idle
postgres 3056 0.0 2.7 552052 27812 ? S Oct12 0:18 postgres: slony mps_kd 127.0.0.1(32775) idle
postgres 3058 0.0 2.5 550892 26148 ? S Oct12 0:08 postgres: slony mps_kd 127.0.0.1(32776) idle
postgres 3063 0.0 8.4 554060 86688 ? S Oct12 0:29 postgres: slony mps_kd 127.0.0.1(32777) idle
postgres 3064 0.0 2.3 552052 24668 ? S Oct12 0:19 postgres: slony mps 127.0.0.1(32778) idle
postgres 3065 0.0 2.3 549980 24140 ? S Oct12 0:34 postgres: slony mps_kd 127.0.0.1(32779) idle
postgres 3066 0.0 3.3 551168 34348 ? S Oct12 0:05 postgres: slony mps_kd 127.0.0.1(32780) idle
postgres 3072 0.0 2.3 550056 24276 ? S Oct12 0:13 postgres: slony mps 127.0.0.1(32783) idle

Regards,
Andy.