cudaSafeCall() Runtime API error : unknown error.

sometimes I get this problem:
“cudaSafeCall() Runtime API error : unknown error.”
and then, I restart my computer, compile the program again, the error disappears, everything is ok.
what’s the matter of this problem?
my operating system is fedora 14, CUDA version is 3.2
thank you!

What is the version of your driver ???

I have the same problem using NVIDIA Driver Version: 260.19.29 .

In my ubuntu 10.04.2 (x86_64) with .

my driver’s version is 260.19.26