In this page I have collected the material related to XPN old versions. Here you can see the screenshot.
This binary versions work on Linux. For the moment it is available only for this GTK+1.2 version, in the future i will try to make it available also for the GTK+2 version.
XPN 0.0.7 [tgz - 111kb]
XPN 0.0.6 [tgz - 95kb]
XPN 0.0.5 [tgz - 70kb]
XPN 0.0.6 (binary) [tgz - 2Mb]