Default Ubuntu post-install Qs (PG v7.4)

1)  Am I right when I assume an init.d type of start/kill scenario is used?

2)  The ps -ef shows the process:

     /usr/lib/postgresql/7.4/postmaster -D /var/lib/postgresql/7.4/main

     postgres:  stats buffer process

     postgres:  stats collector process

I see no logfile explicitly defined.  Where is that specified?

3)  In /var/log/postgresql I am getting logging, but not enough.  How can I get more details?

4)  User postgres keeps getting the following showing up:

postgres@smithrn-ltb2:/tmp$ 2007-10-08 20:02:01 LOG:  incomplete startup packet

2007-10-08 20:07:29 LOG:  recycled transaction log file "000000010000007D"

2007-10-09 00:02:02 LOG:  incomplete startup packet

2007-10-09 05:02:01 LOG:  incomplete startup packet

2007-10-09 10:02:01 LOG:  incomplete startup packet

Thank you!