Apple have now released 10.6.2 so anyone having problems accessing
NetWare or OES2 SP1 (or SP2 when released) Linux servers via AFP from
Mac OS X 10.6.0 or 10.6.1 should update.

See which specifically includes

Network file systems fixes provided for:
* compatibility with third-party AFP servers

Download from

If your servers are NW6.5 SP8 or OES2 SP1 then I would also advise
applying the Mac 10.6 FTF patch to catch any Macs that haven't been updated.

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