Hi everyone, I am a newbie in Ns2.I build Ns2 by the way of "all at one".I download the source "ns-allinone-2.1b5a.tar.gz". Then I uncompress it in Linux using "gunzip ns-allinone-2.1b5a.tar.gz",but error "invalid compressed data-format violated" occur.Will you tell me how to uncompress the file? Thanks Best Regards, Zhang Jing