Thanks HCG :) we have runs like this now and then... whenever we get a new horse invariably SOMETHING goes wrong. When I got Monty [my 17yo gelding] he came off the truck ok, but then his off fore swelled up to 3 times its normal size and I couldn't ride him for a week! [this due to injury because of the truck driver, we presume... he fell twice on the transport truck and this horse has been trucked and trailered up and down the state with no issues so SOMETHING triggered it]
Another pony, 5 minutes in too lush a pasture [a couple of weeks after we got him, and he had LOST weight] turned him over from chronic laminitis to a mild acute bout. Took us 2 weeks to get him moving sound again and 18 months to rehab his feet to the point where they looked like good feet... was sound throughout except for the bout of chronic though.
The coming 2yo I sold a few months ago came to me perfectly healthy but within days had nicked herself and cost me stress... thankfully no vet fees though because it was only a minor wound.
And now Magic. Rain scald, thrush, her stifle issues, and the abscessed gland under her jaw. Not to mention she was very nearly untouchable when I first took her on, it took me a week to get a halter on her and a month to be able to catch her easily in the pasture. Yesterday with the vet was a big breakthrough with the mental issues though - she let a MAN touch her without her having a massive panic attack. Big deal!