hasp_login() hangs on Dell computer

Hi all,

I have a new DELL 5810 computer installed with Windows7/64-bit. On this computer the hasp_login() API function does never return with or without a valid key present. So there is no error message or return code, the function simply never returns. Envelope protected programs also do not work.

We have seen this problem before, but never found a solution. It seems to happen only on DELL computers with National Instruments software (Labview) installed.

Any ideas for a solution or how to investigate ?