installing OK, but checking not OK

[Juha Toivonen]

Following action:

configure --prefix=/...   OK
make                      OK
make check                not OK
make install              OK
make check                not OK

and the output from make check is:
___________________________________________________
PASS: Result Methods
PASS: test
==================
All 1 tests passed
==================
Making check in dht
make  test
`test' is up to date.
make  check-TESTS
PASS: Small Exact DHT
Segmentation Fault
FAIL: test
===================
1 of 1 tests failed
===================
*** Error code 1
make: Fatal error: Command failed for target `check-TESTS'
Current working directory /home/jumito/gsl/gsl-0.6/gsl-0.6/dht
*** Error code 1
make: Fatal error: Command failed for target `check-am'
Current working directory /home/jumito/gsl/gsl-0.6/gsl-0.6/dht
*** Error code 1
make: Fatal error: Command failed for target `check-recursive'
zelda{jumito}15: 
_____________________________________________________

Is this serious and is there something to do, if it is??
Small effects, big effects?

Thank you for your help,

Juha Toivonen
jumito@utu.fi
Turku University
Finland