disp+work not completely started

Hello,

We are on SAP PI 7.11 running on HP-UX...

When I check the SAP NetWaever Administrator --> Java EE instances --> OS processes, I see the disp+work has status: running, but dialog info queue unavailable, AS java: all processes running - yellow LED; warning.

I've read several log files and threads on SDN, but found no solution.

Any advise is appreciated!

Thanks a lot.

Dimitri

ps: all messages pass the SAP PI system without any problem.