Help me to understand this part of samba log

[kauczu]

HI!

Yesterday I discovered in smb log file these entries:

[2008/04/09 23:03:08, 0] smbd/open.c:open_directory(1231)
  open_directory: unable to stat name = iPod_Control/Device. Error was No such file or directory
[2008/04/09 23:03:08, 0] smbd/open.c:open_directory(1231)
  open_directory: unable to stat name = iPod_Control/Device. Error was No such file or directory
[2008/04/09 23:03:08, 0] smbd/open.c:open_directory(1231)
  open_directory: unable to stat name = iPod_Control/Device. Error was No such file or directory
[2008/04/09 23:03:08, 0] smbd/open.c:open_directory(1231)
  open_directory: unable to stat name = iPod_Control/Device. Error was No such file or directory 
[2008/04/10 16:24:16, 0] smbd/open.c:open_directory(1231)
  open_directory: unable to stat name = %SystemRoot%/system32. Error was No such file or directory
[2008/04/10 16:24:16, 0] smbd/open.c:open_directory(1231)
  open_directory: unable to stat name = %SystemRoot%/system32. Error was No such file or directory
[2008/04/10 16:24:16, 0] smbd/open.c:open_directory(1231)
  open_directory: unable to stat name = %SystemRoot%/system32. Error was No such file or directory
[2008/04/10 16:24:16, 0] smbd/open.c:open_directory(1231)
  open_directory: unable to stat name = %SystemRoot%/system32. Error was No such file or directory
[2008/04/10 16:24:16, 0] smbd/open.c:open_directory(1231)
  open_directory: unable to stat name = %SystemRoot%/system32. Error was No such file or directory
[2008/04/10 16:24:16, 0] smbd/open.c:open_directory(1231)
  open_directory: unable to stat name = %SystemRoot%/system32. Error was No such file or directory
[2008/04/10 16:24:16, 0] smbd/open.c:open_directory(1231)
  open_directory: unable to stat name = %SystemRoot%/system32. Error was No such file or directory
[2008/04/10 16:24:16, 0] smbd/open.c:open_directory(1231)
  open_directory: unable to stat name = %SystemRoot%/system32. Error was No such file or directory

For me it looks like somebody or some bot was trying to get in to my network, but if logs shows that path was misstyped (eg. %SystemRoot%/system32) means that this person/bot is already connected to my router/network? Correct me if I am wrong.

I made some research and I typed in not existing path, and smb log looks like this:

[2008/04/11 11:46:54, 0] smbd/service.c:make_connection(214)
  laptop (xxx.xxx.x.x) couldn't find service wwwwwww
[2008/04/11 11:46:54, 0] smbd/service.c:make_connection(214)
  laptop (xxx.xxx.x.x) couldn't find service wwwwwww
[2008/04/11 11:46:54, 0] smbd/service.c:make_connection(214)
  laptop (xxx.xxx.x.x) couldn't find service wwwwwww
[2008/04/11 11:46:54, 0] smbd/service.c:make_connection(214)
  laptop (xxx.xxx.x.x) couldn't find service wwwwwww

where:
- laptop is my computer hostname
- xxx.xxx.x.x is my lan ip

Please help me understand this piece of smb log.
I need to be sure that my net is safe enough.

BTW: I'm using Oleg fw 1.9.2.7-10

Thanks!