this is somewhat weird... I only see you sending PONG's btw...
do you happen to use a BNC (I see some other users in the debug who are)?
Yes, to produce the example debug log I didn't send something to server, to find out if there was some pattern in the period between the burst.
I do not use a BNC and this only happened for SwiftIRC.
I just reconnected to that same server to see, and this phenomenon seems to be gone at the moment.
It lasted about 3 days I think
