Resolved iPad 2 home button "clicks"

This is kind of weird but it wouldn't supprise me at all if this is a common case. My iPad 2's button is now "clicking" a bit when you touch at it. It's not broken, it works, but it's that clicking that slightly bothers me.

Is this a warrantycase (I dunno if I still have this, because it's 1 year only) or will it be expensive to repair? I am aware that I might live with it, but I want to see if anyone here got some issue as I.

Thx in advance!

/Selmir

 

Ah okey, then I understand. Because I noticed that my 4S's button isn't acting like that. But okey, I'm glad that I got this confirmed. Thx