I have always loved to sleep, but with school being all hectic (even though it's only the second week in), I only have at MOST 6 hours of sleep every day- if I'm lucky. My school's very competitive, so I have a LOT of work, and the work is considered pretty hard. And no, you are not witnessing my common act of procrastination: I'm taking a break :). But I still have to finish studying for my last test (I have 4 tomorrow). sigh.
Anyways, no. I believe it's actually pretty healthy to sleep between 8 and 10 hours a day. As all things go, however, too much of anything is not good. It also depends on the person, and his or her form/style of sleeping. Does the 10+ hours mean: sleep 5 hours, do work, take 2 hours power nap, do more work, sleep another 5 hours? Or is it simply a start-to-stop thing?