The PCI-5122 does not pass the self test. It says "error 200550 occured. Possible reason: Hardware clocking error occured". I'm not using any external clock and my PC is 3Ghz pentium with Windows XP. Uninstall/install of NI_Scope and NI DAQmx didn't help.
By the way, if I put PCI-5911 card instead of PCI-5122 into the same PCI slot, it works fine.