logviewer timeout

When I try to launch the Logviewer from Server -> Services in Visual administrator it does not work anymore. Here is the error message:

Caused by: com.sap.engine.frame.cluster.message.ResponseTimedOutException: Participant 324,017,650 did not return a response in the specified timeout of 100,000 ms.

Where is that timeout set? It has always taken awhile to bring up the logviewer but not this long....

I have manually deleted all logs from j2ee/cluster/server0/log on the servers in the cluster. That did not change anything.

Please help.

-AD