X crashes after a few minutes or seconds (Jaunty)

[floyd0815]

My X server crashes (without reports in the log) after few time when I use my touchscreen.
When I use my touchpad it doesn't. (first I thought it was a xorg-intel problem)
Then I have to restart X via <alt>+<print>+<K>.

In Hardy, my touchscreen worked perfect (eGalax-driver), and in Jaunty it does too, except the freezes.
And the eGalax driver doesn't find a usb-controller, so I cann't use it either.

Description: Ubuntu 9.04
Release: 9.04

xserver-xorg-input-evtouch:
  Installiert: 0.8.8-0ubuntu3
  Kandidat: 0.8.8-0ubuntu3
  Versions-Tabelle:
 *** 0.8.8-0ubuntu3 0
        500 http://de.archive.ubuntu.com jaunty/universe Packages
        100 /var/lib/dpkg/status

Hardware:
Acer Aspire One ZG5 modded with eGalax Touchscreen (Hoda - eBay)
1.5 GB Ram
(happens with normal and Sickboy's kernel)

Thanks in advance!
Floyd

ProblemType: Bug
Architecture: i386
DistroRelease: Ubuntu 9.04
Package: xserver-xorg-input-evtouch 0.8.8-0ubuntu3
ProcEnviron:
 LANG=de_DE.UTF-8
 SHELL=/bin/bash
ProcVersion: Linux version 2.6.29.1.20090414.sickboy (root@Desktop) (gcc version 4.3.2 (Ubuntu 4.3.2-1ubuntu11) ) #1 SMP PREEMPT Tue Apr 14 22:08:40 EST 2009
SourcePackage: xf86-input-evtouch
Tags: ubuntu-unr
Uname: Linux 2.6.29.1.20090414.sickboy i686