It sure takes long time to get your rebate check, most of the cases.  Did I mention one time I got a check in the mail but it was someone else's?  The mail man delivered to the wrong address!  I gave it back to the post office, so that it was being re-delivered.

My point is, keep checking with the rebate company.  But the check could also be lost in the mail.  Let's just hope it's not the case.