Jeff is seeing a matlab nds2 client error, Jonathan thinks it may be related to maintenance. I am able to get a channel list from the caltech nds2 server using diaggui, but matlab reports the error:

>> nds2.connection('nds.ligo.caltech.edu')
Java exception occurred:
java.lang.RuntimeException: Error occurred trying to write to socket
    at nds2.nds2JNI.new_connection__SWIG_2(Native Method)
    at nds2.connection.<init>(connection.java:51)