Are you talking about suspend or hibernate? Resuming from suspsend takes about 9 seconds on my Thinkpad T42p, while resuming from hibernate takes 1.5 mins. This is unfortunate because cold boot takes less than a minute... I tend to suspend/resume a lot and never ever hibernate.
When Linux supports process suspend/resume, hopefully resuming from hibernate becomes:
- boot in 5 secs
- restore your suspended apps