[Joe]

Just found this thread....yuk, the green overcast is awful!

Several reasons why this could have happened...
If your photo was done from a CD, memory card etc via an order 'kiosk' there's not normally much the lab assistant can do with most types of software installed in the lab shops.
If your photo was done by handing over a neg or slide then it would've been scanned to produce the print. most software then enables manual overriding to adjust colour balance and brightness.

Either way, the electronic file (from neg scan or kiosk) is sent to the same print processor machine....on this end of the lab nothing has changed since the advent of digital cameras. (unless you go for 'instant print' machines...that's a different story)

From that print, personally I suspect the chemicals in the print processor were either due for a change (chemical life is often 'extended' in order to cut costs with the cheaper labs), or they were having problems with lab processor PH, or the processor just needed a darn good service.