If I ping from my workstation I get 'destination unreachable' but no errors when I try patch downloads. Have you tried more than just the US West Coast source?
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When I begin downloading patches it starts by verifing patch, patchec, and patchemea. After a few seconds it with the message,"You have not specified a valid site from which to download patches..." When I look at patchsources.xml it shows both patchec and patchemea with <enabled>false</enabled>. When I try to edit this file by hand my changes are overwritten once I start my patch download. Is there a parent for this file ala ldappl3.template for the ldappl files?
FWIW, the problem was certificate failure that you could see in the vaminer.exe.log file. We downloaded root certificates from geotrust (signers of landesk certs) and placed them in the root certificate store and all is well.
This issue has occurred due to a change LANDesk has made to the patch content servers. A new wildcard certificate was applied to the Patch Content Servers to prepare for a change that is being implemented that will provide load-balancing so that all requests come to a central patch content server name and then are automatically sent to the best server.