When a creature is hit with the Wizard's Sleep, do they also have to save against the initial slow effect?

Question

The Wizard Level 1 Daily spell Sleep says:

Hit: The target is slowed (save ends). If the target fails its first saving throw against this power, the target becomes unconscious (save ends).

So say a creature fails it's first saving throw and becomes unconscious (save ends).

Does the creature have to save separately or together against both unconscious and slow?

Answer 1

The current text reads:

First Failed Saving Throw: The target is unconscious instead of slowed (save ends).

This was clarified in Essentials, and the errata was back ported to DDI.