White alarm for the beamline and left arm LeCroy HV crates. Checked the HALOG, followed advice in entry 322654. Rebooted IOCs 11 and 22 via hareboot22.
Crates still non-responsive (show 'white' alarm), but will give it a few minutes before panicking. I believe it took about 30 minutes for the alarm to disappear last time this happened.