Hi. I have just changed to the latest version of samba on a CentOS 5.4 machine as I now have Win7 computers in the domain. [root] #>smbd -V Version 3.5.4-0.83.el5_7.2 On the old version (I think 3.0.29) I was able to change the SID on any NTUDER.DAT file happily. Now I cannot change SID on any NTUSER.DAT file. However, I can log into the domain using the username that is attached to the NTUSER.DAT file, no problem there, so there is not anything wrong with the registry file. I get this: [root] #>/usr/bin/profiles -c S-1-5-21-DELETED-5424 -n S-1-5-21-DELETED-5560 NTUSER.DAT ndr_pull_error(11): Pull bytes 1 (../librpc/ndr/ndr_basic.c:74) ndr_pull_security_descriptor failed: NDR_ERR_BUFSIZE prs_grow: Buffer overflow - unable to expand buffer by 36 bytes. ndr_pull_error(11): Pull bytes 1 (../librpc/ndr/ndr_basic.c:74) ndr_pull_security_descriptor failed: NDR_ERR_BUFSIZE prs_grow: Buffer overflow - unable to expand buffer by 36 bytes. ndr_pull_error(11): ndr_pull_relative_ptr1 rel_offset(229376) > ndr->data_size(4096) ndr_pull_security_descriptor failed: NDR_ERR_BUFSIZE Any ideas anyone? Jobst -- 'Two things are infinite: the universe and human stupidity, and I'm not sure about the first one. - Albert Einstein | |0| | Jobst Schmalenbach, jobst at barrett.com.au, General Manager | | |0| Barrett Consulting Group P/L & The Meditation Room P/L |0|0|0| +61 3 9532 7677, POBox 277, Caulfield South, 3162, Australia