i'm running ubuntu 12.04.3 x86 desktop in my corporation environment. I join the corp domain by Likewise open. But when I ping another pc, say hostname is pc-test, "ping pc-test" or "ping pc-test.domain.name" returns slow interval (about 5 seconds) but the ping value is below 1 ms. When I use "ping -n pc-test", everything works well. So I conclude this is about reverse DNS issue.

how to fix this issue? many thanks!

In my understanding, reverse DNS issue is related to DNS server or Wins server, not only an ubuntu issue, is this right?

if I wanna fix this issue as much as possible on ubuntu but not on network servers, what to do?