I believe our bank just stopped accepting stuff from the version of quicken that my father uses to do his financials. To this day he runs quicken on a 2005 (!) iMac G5, which is his daily driver.
I'm still running it on a Mac iBook from 2004. Its the only thing I use it for because I can't stand later versions of Quicken on either the Mac or a PC. Granted, I'm only using it as a checkbook register but it does it so well, why look for something else?