Count me in on this, though mine is a brand new (less than a week) 25L - GT12-1340m.
If I can get it to sleep, which it usually just refuses to do after a quick screen flicker, it won't wake up. AND, after I manually power it off I get an error (from BIOS, I think) saying that one of the fans in malfunctioning. I'm fairly certain this is a false alarm (about the fan) as it only happens after powering off during sleep and then is fine after reboot (tested with various GPU benchmarks).
Not a great experience, coupled with the absolutely idiotic flashing light during sleep, and (day after I received it) disabled ability to turn off rainbow color-cycling on the RAM modules, I'm starting to regret my purchase. C'mon HP. It's great you're offering these machines, but the support isn't so great. So far.