Error While Compiling Nvidia Sdk , Cuda 4.0

Dear all,
I installed the SDK on my ubuntu 11.04 machine and I am trying to compile the code the smaples that come with the SDK. I am using gcc 4.4 and 4.5 compilers.

the error that I get during compilation is:
/usr/bin/ld cannot find -lcutil_i386

thanks.