I never have been able to get my laptop to hibernate (sometimes it won’t even go to standby). It always gives me a cryptic error message: “Insufficient system resources exist to complete the API”.
Finally today I thought I’d search for this error message to see if anybody knew what to do about it. Turns out the problem is solved by a hotfix which you can download from Ugh’s Graymatter Honeypot. I tried it and it works like a champ now. My electric bill with thank him.