clockspeed do not run continuosly (just finish after start/it's not started/intended for background)

Hello,

I have a problem with clockspeed  binary from clockspeed-0.62 package
(sntpclock is working just fine).

I adjusted conf-cc with to
cc -O2 -include /usr/include/errno.h

I adjusted clockview.c:
#include <sys/time.h>
to
#include <time.h>

I'm using

Ubuntu Edgy

gcc --version
gcc (GCC) 4.1.2 20060928 (prerelease) (Ubuntu 4.1.1-13ubuntu5)

uname -a
Linux gimli 2.6.17-10-generic #2 SMP Tue Dec 5 22:28:26 UTC 2006 i686
GNU/Linux

My problem is, that clocspeed is exiting without any message immediatelly
after start (during testing I run clockspeed NOT for background)

On other machines is working fine. It's not my first installation.

Could somebody help me, what I shall try?

Thank you in advance,
Jiri