A few days ago, more than two weeks since I planted them, the pumpkin seeds had yet to sprout. I looked at the packet to double check the germination time when I discovered something awful - they were dated 11/09!
That explained it, they were dried up and dead. I should of known better than to use seeds found on a shelf in my garage hoard. I knew they were old, but did not think THAT old.
I gave up on them and decided to try again after picking up fresh seeds later this weekend.
But, just this morning, I've discovered they're actually LIVING DEAD SEEDS!