[ns] what should i do?

["JIN Xiaohui" <xhjin@mcn.xidian.edu.cn>]

sir, i just installed ns-2.1b8a on my red hat 6.1.
the install process is ok. but after validate process, 
it displays as follow:
"All test output agrees with reference output.
validate overall report: some tests failed:
     ./test-all-cbq ./test-all-webcache ./test-all-mcache ./test-all-plm 
     ./test-all-wireless-shadowing ./test-all-wireless-lan-aodv 
     ./test-all-wireless-tdma ./test-all-wireless-gridkeeper 
     ./test-all-wireless-diffusion ./test-all-wireless-lan-newnode 
     ./test-all-WLtutorial ./test-all-energy ./test-all-cbq-v1
to re-run a specific test, cd tcl/test; ../../ns test-all-TEST-NAME
Notice that some tests in webcache will fail on freebsd when -O is turned on.
This is due to some event reordering, which will disappear when -g is turned on."

i want to do some simulation on 802.11, but there r some fail validation test as above shows.
what should i do?
thanks


Best Regard

JIN Xiaohui
tel: 029-8201002
National Key Lab. of Integrated Service Network
Xidian univ. 710071, P.R.China