Theme settings don't "stick"

With bluemarine as default theme, do the following:

1) Go to admin/themes/settings
2) Check off all boxes in "Display post information on"
3) save configuration
4) Go to admin/themes/settings/bluemarine
5) Make no changes and hit "save configuration"
6) Navigate back to admin/themes/settings
7) Notice the check boxes are in "Display post information on" are no longer checked.

Also, try this:

1) Go to admin/themes/settings
2) In the "Toggle display" group, check off "user pictures in posts" and "user pictures in comments"
3) save configuration
4) go to admin/themes/settings/bluemarine
5) In the "Toggle display" group, check off "user pictures in posts" and "user pictures in comments"
6) save configuration
7) Go back to admin/themes/settings
8) notice "user pictures in posts" and "user pictures in comments" are no longer checked
9) Check them again
10) save configuration
11) go back to admin/themes/settings/bluemarine
12) notice "user pictures in posts" and "user pictures in comments" are no longer checked