[2002/04/02 00:03:06, 1] smbd/server.c:main(641)
smbd version 2.0.8 started.
Copyright Andrew Tridgell 1992-1998
Connection made to your machine
[2002/04/02 00:03:06, 0] printing/pcap.ccap_printer_fn(366)
Unable to open printcap file /etc/printcap for read!
You enabled printing, but don't have a printer on that machine.....
[2002/04/02 00:03:06, 1] smbd/files.c:file_init(216)
file_init: Information only: requested 10000 open files, 1014 are available.
Standard request to see what is shared....(clicking on a computer in Network Neighborhood)
[2002/04/02 00:03:06, 1] smbd/password.cass_check_smb(492)
Couldn't find user '4-dogs p.m.' in UNIX password database.
Looking up username/password.. Can't find...
[2002/04/02 00:03:06, 1] smbd/reply.c:reply_sesssetup_and_X(927)
Rejecting user '4-dogs p.m.': authentication failed
Sending rejection to user...failed username/password.

Fortunately, you didn't turn on a guest account, or that last line would have been different...
From what I saw, no one gained access to your system, but I wasn't going to take the time to read all of the log file... You have enought security for 99% of the script kiddies out there, but there is still that 1%, and the people that actually know what they are doing. Then again, the people that REALLY know what they are doing, you are not going to keep out any way....if they really want to get in.