[X-Unix] XWindows

[AKappyCT]

My new PowerBook came with Tiger installed - generally a joy to behold. 
Until I got to XWindows.
Got X11 loaded and proceeded to initiate a familiar XWindows session 
with my server at the office.

The result:

X Error of failed request:  BadAtom (invalid Atom parameter)
   Major opcode of failed request:  18 (X_ChangeProperty)
   Atom id in failed request:  0xba
   Serial number of failed request:  221
   Current serial number in output stream:  224

Any suggestions?