Problems with precmd/urxvt

[Yuri D'Elia <wavexx@xxxxxxxxxxxxxxxxxxxxx>]

Hi everyone. Recently I tried make zsh change my terminal title with the 
following in my .zshrc:

precmd() { print -Pn '\e]2;%~\a' }

it works ok, but from time to time, when I fire up a new urxvt terminal, 
I get the following:

precmd:print: write error: interrupt

anybody got the same?

Also, since print is builtin, I wasn't able to silence the error anyway.