This is actually more of a server issue than the client, so I guess continuing in this thread makes sense:
And yes, while this could be an issue with outgoing SSL-connections or invalid system time. This time it’s not. And it cannot be pure random chance, that this keeps occuring on this scale. I suspect it would be worse, if the revocation lists did not have a life time of about a month. So if they don’'t fix it, there should be a lot more complains around beginning next month, when all the servers that previously successfully downloaded the list have their copy expire.
One odd thing to add: While my server(s) cannot download the list. For me the client side warning only appears in the TS3 client and the mobile (iOS) one, but not on the TS5 beta client.