That is, they use a proprietary format and often require annual upgrades.
I don't recall the details, but my credit union had a choice of continuing to allow downloads in a quicken-compatible format. Doing so would have cost the CU a bunch of money due to the needed upgrade. After asking for input from members, they decided not to do the upgrade. More on Intuit's tactics with the upgrade is [link|http://informationweek.smallbizpipeline.com/news/47212171|here].
I've just briefly played with MoneyDance tonight. It's not horrible and is actually usably snappy on this 1.2 GHz Athlon with 768 MB of RAM. I was pleasantly surprised (compared to some other hideous Java applications I've seen). It's much snappier than a beta of OpenOffice.org that I tried a couple of months ago.
If the choice was between Intuit and a Java application, I'd go Java every time. But since my banking is relatively uncomplicated, I can do what I need on-line or with my checkbook, so I still don't personally have the need for MoneyDance or Quicken.
FWIW.
Cheers,
Scott.