Well, the server changed on us, of course it was right after releasing a new version and then spouting off about it!
Fortunately the fix is easy:
1. Go to Window->WMS Custom Servers.
2. Left click to select the "Land Ownership Layer"
3. Delete everything in the large "Request" Box.
4. Replace with this string:
wmsconnector/com.esri.wms.Esrimap/BLM_MAP_SURFACE_MGT_AGY?VERSION=1.1.1&SERVICE=WMS&REQUEST=GetMap&SRS=EPSG:4326&LAYERS=BLM+Lands,US+Forest+Service,FWS,DOD,BOR,BIA,National+Parks,BLM+National+Monuments,BLM+Wilderness+Areas,BLM+National+Conservation+Areas,OTHER,STATE,LOCAL&TRANSPARENT=FALSE&FORMAT=image/jpeg
5. Hit the "Save Changes" button.
6. Close the WMS Custom Servers dialog.
You're good to go.
Fortunately with this change I think the output has improved a bit. There seem to be more text labels.
Sorry about the issue!