I've got a Sony Vaio VGN-Z21VN. When I put it into hibernate (not sleep) the battery drains - after 24 hours or so the battery is dead.
Any ideas on how to troubleshoot or fix this?
UPDATE: It turns out that the battery drains even when my Sony Vaio Z is switched off (about 10% every 24 hours)
There's a 50 post forum thread on this 'design feature', but no way to fix it: