Today I found I was unable to write back files to my samba shared directories. CHecking through the status foo, I found that all opened files were showing as READ ONLY. I had been able to happily edit files the previous day with no problems. Upgraded from 2.2.5 to 2.2.8a (just in case of random bugs) same issue. As far as I can tell this can only be related to a recent (last 2 days) MS bug/patch release that was revolving around a security problem regarding the share system. It was specifically detailed for port 135 (not used by Samaba I believed) but who knows what else might have been 'fixed'. My second XP machine was able to continue to save files successfully (it hasn't been patched yet). However, once I had saved a file form the second machine, the first machine was also able to do so! So, yes, while this could just be some MS Magic, I report it here - dutifully - just in case it is related to this recent patch.