Comment 2 for bug 62464

The vidwhacker screensaver depends on the netpbm package, if not installed it fails with a nondescriptive error "vidwhacker: 0-length data". Installing the netpbm package fixes the problem.

I think a dependency on the netpbm package should be added to the xscreensaver-data-extra package.

This was tested on a fresh Dapper install as of 26-9-2006.
package versions:
ii netpbm 10.0-10ubuntu1
ii xscreensaver 4.23-4ubuntu8
ii xscreensaver-data 4.23-4ubuntu8
ii xscreensaver-data-extra 4.23-4ubuntu8
ii xscreensaver-gl 4.23-4ubuntu8
ii xscreensaver-gl-extra 4.23-4ubuntu8