[dwm] XTerm Problem

[Natas Lestat]

Whenever I open an xterm, and run something in it, then change it's width (By opening another program for example), and try to tab complete something, it doesn't just complete it, but also echoes it again...
Check this image: http://img523.imageshack.us/img523/333/fooqe7.png

I don't know what's wrong... This doesn't happen with some terminal emulators, like mlterm, or with the csh shell...

I know this isn't really a DWM problem, I was just wondering if anyone else has seen this, or maybe even knows a solution?