Agreed, it is odd, I've never had this trouble on any other rig with any other wallet, I've left it "updating" with the chain download and without over a period of several days. I think its some kind of software blip, on that particular rig, I have had other wallets working just fine on that machine but the Mint wallet just won't have it.

Either that or like I said the issue is with the user lol

As it happens I've just obtained a couple of cheap and cheerful rigs which I will just use as permanently on wallet machines, they aren't much good for anything else so I can try the install on a different machine and see how it goes