[Cflowd] Checksum Error when cflow is umcompressed

hi

I am using cflowd-2-1-b1.tar.gz  on solaris 2.6, given on the www.cflowd.org  site. Problem is, when I uncompress it through tar command, it umcompresses cflowd but gives Checksum error in the end. I downloaded it number of times and uncompressed it many times but found same error.

Can some one tell me why is it so?

From where I can get cflow compressed file other than www.cflowd.org?

favour will be highly appreciated.

thanks

best regards

Amin