Forums mIRC Help Disconnects Frequently (forced to use hydrairc)

Assuming you're idle, look in your status window, you should see continual "Ping? Pong!" notifications:

[21:58] Ping? Pong!
-
[22:01] Ping? Pong!
-
[22:03] Ping? Pong!

If you don't, something is wrong. Check Alt+O -> IRC -> Options and make sure "Hide Ping? Pong! Event" is unchecked (at the bottom) and check for the events again. if they still don't show up, this would explain the disconnections.