On 20/07/11 10:04, Stuart Bailey wrote:
I have a mid sized network, around 80 users. Most of these users are using windows clients, with a few macs. There are 3 Linux servers, 2 for file services (samba and netatalk), and one as domain controller (Samba) and email (cyrus / postfix). There is also a windows server used for Sage.
{} Bit of a wild guess here. I used to get problems with windows machines insisting that they wanted to be the domain master and periodically forcing an election over who was in control. Until the election was over, I'd get a slight delay. To cure it, I had to specifically tell all windows machines that they were clients, and never a master. This was quite a while ago, so I've no idea how I did this now.
On another occasion I had installed an update to samba, that provoked me to run the samba configuration tool, and I got it wrong. Samba was trying to synchronise with a windows domain server, but it couldn't find one. The symptoms of this were initial logins taking an age, then when the synch timed out, then logins for a while would be instant, but after a while, it would try to synch again and logins would have to wait for that time-out.
Good luck - I hope you find the problem.