Bug#812884: gscan2pdf: Changing the resolution is not persistant

[xan]

In fact, I was only reporting the bug from my Ubuntu machine but I use 
gscan2pdf on a Debian machine. I noticed now that this 
reporting-from-the-other-computer was not very clever. I’m sorry about that.
How do I try the most recent version of gscan2pdf in Debian? Can I also use the 
PPA?