Before submitting a bug report, check your config for silly
errors. Look in your log files for obvious messages that tell
you've misconfigured something. Run testparm to check your config
file for correct syntax.
Have you looked through
The Samba Checklist? This is extremely important.
If you include part of a log file with your bug report, then be sure to
annotate it with exactly what you were doing on the client at the
time and exactly what the results were.