Thanks, I'll try it. I did try 'netstat' but it just gives me unusable data...
The data isn't completely unusable. It should (or can, based on its options) give you the inode of each socket. You can look under /proc/<pid>/fd for a processes sockets and their inodes, then correlate the two data sets.
That's basically what lsof does for you automatically, but it's probably worth understanding the relationship of the two sets of data.
