Are Mushy Keys Normal?
 

I tried playing piano a few years back, but dropped it. Now I'm playing agian (two months so far) and it's really fun.
I currently have an Alesis Recital, and after reading a review that said the keys feel mushy, I noticed that myself. There is more resistance on the top than than the bottom. It feels awkward.
Is this how semi-weighted pianos are supposed to feel, or is this just a problem with this one?

(I posted this in instrument recommendation, then I realized it didn't fit there. I couldn't figure out how to delete it, so I just reposted it here).