Situation:
- Dev version from 2010-Oct-13 was installed
- On the 'Available updates' page, current version is shown as 'Update availible' (yellow), version 6.x-1.4 is shown as 'Recommended version'
- Drush update done via 'drush up globalredirect'
- Global redirect gets updated to new Dev version instead of stable
- On the 'Available updates' page, current Dev version shown as 'Up to date'

Other modules that where in Dev version updated to stable with Drush as expected