I've Google and saw people who have a similar problem (Whining about a 54-seconds-wake-up-time etc) but my problem is somewhat different.
When I first got my new PC and installed a fresh Win7 on it, I immediately disabled all sleep, hibernation and hybrid-hibernation settings and only allowed the screen to turn itself off after 15 minutes of idle state. Waking the screen up took between 3 to 5 minutes.
As time went on, owning this PC for approximately 4 months the screen waking time is now between 10 to 15 minutes! Truly, this is outrageous. I have do get updates before work with my phone instead of the PC because I can't wait for so long for it to wake up. :|
Any ideas? Suggestions? Could it be a hardware problem? I still have warranty over that..