A lot of files that were created via earlier versions of samba are not shown on the windows clients any more after upgrading from samba 2.2.8a to 3.0.6. Some of the file names contain national 8bit (Norwegian) characters, and the ones coming up were shown with an underscore instead of the originl eight bit character. The samba package was successfully compiled locally with gcc version 3.3.1. The install was done as an upgrade to a running version of samba.2.2.8a. I would really have liked somebody to compile a binary 3.0 version that was proven to work properly under sun solaris, and that could be installed directly without having to fiddle with special solutions to handle national character sets appropriately.
please read the manual before you update to a new major release, esp. the chapters about charsets and new options. The samba mailing list is a way to get help if you are stuck with the manual.