My Keurig Single cup Coffee maker is not...

I received Keurig Coffee Maker in December 08. I used K-cups for a while but switched to using the filter that you can buy and use your own coffee. I have no idea if that problem is with that filter or something else. It sounds fine and runs fine until the end of the cycle. The maker still sounds as if it is brewing and it sort of spews coffee. This goes on for another 30 seconds or so. I THINK the coffee does not seem as wet as before. HELP! My Keurig is too "young" to be giving out! Christi in Mississippi christicave@comcast.net