[44net] jnos and ubuntu 12.04

I am hearing from local hams that jnos and ubuntu 12.04 LTS are not compatible? Reasons: 1) unable to telnet tun0 port to the jnos application from the linux host 2) Something about module for tun not getting loaded 3) Response time from the radio side is slow on connections. Can someone shed some light if there is a compatibility issue and what are the hoops that must be configured, if any? -- Daniel Curry PGP: AD5A 96DC 7556 A020 B8E7 0E4D 5D5E 9BA5 C83E 8C92 San Francisco/Silicon Valley AmprNet Co-coordinator [44.4.0.0/16]