I idle many IRC channels daily, along with a SILC channel, but I do this by ssh'ing into remote servers. I'll be on irssi for anywhere between 20 minutes to several days, when all of a sudden, irssi on the remote server will freeze. All the keys are completely locked. Oddly, I can still use C-a a or whatever, and GNU screen will be totally responsive. This happens on multiple servers. I have no idea where to even start. I've checked Google extensively, and I hope this is a simple fix.