Feeds disappear after going through one cycle

What steps will reproduce the problem?
1. leaving the roller to rotate through one cycle
2.
3.

What is the expected output? What do you see instead?
I would expect that it would remove the read one and keep the unread articles. 
Instead it removes all the article wheter or not they are read

What version of the product are you using? (Note: if you pulled the source from 
SVN, enter a revision number here instead of a Snackr version number)
0.41
On what operating system?
Windows 7
What version of the AIR runtime do you have installed?
The latest

Please provide any additional information below.

if this is how the code is meant to run i would suggest an update that gives 
the user the options to remove them or keep them until the next refresh of feeds

Original issue reported on code.google.com by richardc...@gmail.com on 17 Jan 2011 at 4:01

Merged into: #232

AizenL / snackr

Feeds disappear after going through one cycle #322