Unrecognized

source          OS      Cpu         kernel/rlse     GCC    gdbm  pcap       interfaces 
--------------- ------- ----------- --------------- ------ ----- ---------- ---------- 
xx0.27.29.xx0   Unknown unknown                                  <0.8       br0   
xx0.89.232.xx7  Unknown unknown     2.6.15-1-686    3.3.5  1.8.3 <0.8       eth0,br0   
xx2.152.17.xx8  Unknown unknown                                  <0.8          
xx2.152.9.xx8   Unknown unknown                                  <0.8          
xx3.103.130.xx9 Unknown unknown                                  <0.8          
xx3.103.139.xx6 Unknown unknown                                  <0.8          
xx3.176.36.xx2  Unknown unknown                                  <0.8          
xx3.176.42.xx3  Unknown unknown                                  <0.8          
xx3.176.59.xx1  Unknown unknown                                  <0.8          
xx3.176.62.xx3  Unknown unknown                                  <0.8          
xx3.180.103.xx2 Unknown unknown                                  <0.8          
xx3.180.238.xx2 Unknown unknown                                  <0.8          
xx3.180.252.xx1 Unknown unknown                                  <0.8          
xx3.180.83.xx3  Unknown unknown                                  <0.8          
xx3.180.96.xx4  Unknown unknown                                  <0.8          
xx3.181.103.xx8 Unknown unknown                                  <0.8          
xx3.181.104.xx7 Unknown unknown                                  <0.8          
xx3.181.117.xx9 Unknown unknown                                  <0.8          
xx6.199.123.xx2 Unknown unknown                                  <0.8          
xx6.214.219.xx7 Unknown unknown                                  <0.8          
xx8.208.181.xx4 Linux   i686        2.4.20-8        3.2.2  1.8.0 <0.8       eth0

If you recognize your configuration in the above list of unrecognized versions, it means that utils/linuxrelease isn't correctly identifying your OS/Distribution.

You can help improve ntop by sending the following information to the ntop-dev mailing list!

The exact name and version of your OS/Distribution, from the documentation or the CD.
The output from the 'uname -a command'
The output from utils/linuxrelease script, utils/linuxrelease -f and utils/linuxrelease
The names and contents of any files in the /etc directory with version or release in their names. You can find these files via 'ls /etc | grep -i release' and 'ls /etc | grep -i version'.

For example, on my computer, I would do/report:

$ utils/linuxrelease
gentoo 1.4.3.13 2.4.23_pre8-gss
$ utils/linuxrelease -f
Gentoo Base System version 1.4.3.13

$ ls /etc/*[Vv]ersion*
ls: /etc/*[Vv]ersion*: No such file or directory

$ ls /etc/*[Rr]elease*
/etc/gentoo-release

$ cat /etc/gentoo-release
Gentoo Base System version 1.4.3.13

Thanks!