problem with \input and updating

[Gunnar G]

Hello.
I use lyx 1.3.4 on my Linux machine and I'm having a problem with viewing a
document (as postscript). In this document I include another TeX file by
using \input{myfile.tex}. The problem is that if I change myfile.tex, the
ps document does not reflect this.
It is properly shown if I delete all files in /tmp/lyxadsfaasfds/  (some
directory that seems to be used by LyX).