Did you update the latest firmware? The robgalbraith.com article stated the older firmwares might cause problems. I just ordered it the Delock and hope it doesn't lock up my computer. OSx mountain lion on mbpro 2010.
How long is the Firewire 800 cable on your Delock CF reader? I just ordered a 12 inch left-angled cable from angledcables.com so I can stick the reader(using velcro) on the top back of the macbook pro display(13") for quick ingesting of images via photo mechanic. is yours still working?
i just order mine from memorydepot and it's a lot cheaper than the other places
$60 total including shipping.
For the ones who are interested, there is a firmware update available now for the cardreader which solves the compatibility issues with 10.6.8.. It can be downloaded here. The cardreader works perfectly now with Mountain Lion