I activated my student version of MATLAB R2012a on the Mathworks website with my original host ID (my Mac address).

For some reason MATLAB thinks that my host ID is 0000..0 (sequence of zeros) when I open MATLAB.

It exits with an error saying that this version of MATLAB is registered with some other host ID other than your computer's host id (00000000).

Its true because my hostid is not a sequence of zeros.

What do I do?

I installed MATLAB Student Version on my Ubuntu 12.04 64 bit OS. I installed ia32-libs too.