Hey Mandawah,
The key to the "Udev is now the default device manager" statement is the "default" part. Mandrake 10.1 official still has and uses hotplug, it just uses udev by default. Mandriva 2006 however, does not include hotplug at all.
I "personally" have never used a USB-6008 on Mandrake 10.1 official with DAQmx Base 2.0. Rest assured though that if it is in the supported distributions list of the README, then the DAQ team here at National Instruments has run numerous automated, and hand tests before claiming support.
Let me know if you have any other questions, or if you run into any problems.
Shawn B.
National Instruments