irssi in screen / reconnected session in Putty missing bottom part of window
I'm running irssi in Backtrack 5r3 (Ubuntu) within a screen session.
Detaching the screen and reconnecting on that machine is fine, no issues.
My issue is only when I ssh to my box via an SSH client. One one PC I use Putty to connect, and then I also have an SSH app on my ipad I use.
In both cases, when I reconnect to my screen, it's missing the bottom part. In other words, if I type something it works (like, /n shows me the users in the IRC channel), but I'm not able to actually see what I'm typing or the status bar of irssi.
Does anyone have any suggestions? I just started using screen and irssi, so currently I'm using all the default settings.