If you are trying to access your Windows 2003 shares from OS X and getting the -43 error, it's the Windows 2003 Server firewall. Turn it off, and you'll have no problem.
I had believed that this problem was on my end. I had upgraded to Tiger and lost connectivity with my Windows 2003 shares. Exactly the problem everyone here has been talking about. When the 10.4.1 upgrade did not fix this, the sys admin and I took a harder look. It turned out to be the firewall on the Windows 2003 Server. Turned it off - and bang, I was back to normal.
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If you are trying to access your Windows 2003 shares from OS X and getting the -43 error, it's the Windows 2003 Server firewall. Turn it off, and you'll have no problem.
I had believed that this problem was on my end. I had upgraded to Tiger and lost connectivity with my Windows 2003 shares. Exactly the problem everyone here has been talking about. When the 10.4.1 upgrade did not fix this, the sys admin and I took a harder look. It turned out to be the firewall on the Windows 2003 Server. Turned it off - and bang, I was back to normal.