Running the 2.2.05 snap of Evolution on NLD9 SP1.  I'm seeing a random 
error message pop up when trying to send either a GW task or a meeting to 
a GW user.  The error popup just says "unknown error" with an "ok" 
button.  The groupwise server is Sequoia build 2.2.05 running on NetWare 
OES.

Steps to reproduce the problem:
1. Create GroupWise user in Evolution. 
2. Set Evo to use the GroupWise calendar and tasks (instead of Personal).
3. Send a meeting or task to a GroupWise user.

Actual Results:

Occasionally Evo will pop up an "unknown error" message.

Expected Results:

Meeting or task to be sent without error.

How often does this happen? 

Random, maybe one task in 20 will see the error.

Additional Information:

I've attached the output of the command line and the data server.