Walker, your yeast will be fine. If the starter doesn't have a bad smell, pitch it.
Originally Posted by boo boo
Also you should hold your starter at room temps as you are only growing yeast, not making beer yet. The warmer the temps (within reason) the better/faster the growth.
There are some concerns, that growing yeast at a higher temp than the intended fermentation temp can shift their metabolism and then they will also produce esters/fusels during regular fermentation temp. But this is more a concern with lager yeast than it is with ale yeast.
This said, I started to propagate my lager yeast between 10C (50F) and 15C(60F). And yes, it took 6 days for me to grow 80 ml yeast sediment from a WYeast smack pack at ~12C.
But until recently,I propagated yeast for lagers at room temperature and I couldn't detect any esters.