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10.6: Slow SMB browsing of Windows Servers fixed
Authored by: fsjjeff on May 04, '11 03:42:04PM

I think this is a bit of a complicated issued based on the Macs ability to resolve the Windows user and group GUIDs from Active Directory that are used to define the file share permissions.

I manage 4000 Macs for a school district, all bound to AD, and I've seen the ssllllooooowwwww SMB browsing when the AD communication breaks, and the Mac can no longer resolve the AD GUIDs.

In other words, the Mac logs onto the SMB server, tries to figure out it's permissions, sees the ACLs defined to GUID ########, tries to resolve that but can't, spins it's rainbow wheel for a while, then moves onto the next ACL, repeat, then the next, then finally to the next file/folder and repeats the process.

Unbinding and rebinding has resolved the issue for us, but if your Mac is not bound to AD, or if communication to the AD domain is otherwise interrupted, I'd say it's quite possible that this issue would also appear.



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