Comment 36 for bug 35213

I did this too and I also re-enabled the laptop-mode in /etc/default/acpi-support and now my machine is working normally (suspended it twice after a reboot, both finished in less than a minute). I did also some pre-emptive testing by setting the action of lid-close to suspend, rather than hibernate and it is also working great.

Thanks for you both Michael and Bart. This was the largest issue I've had with my laptop since I installed Dapper and now it seems to be fixed =)

The only question is how much more power is consumed without the writecache option? I have very poor battery life already...