Slow resume from sleep if sleep for long time

I currently run win7 ultimate 64bit, 8gig ram, intel i7-2600k cpu, and my OS runs on an OCZ SSD (all specs are in my profile)

Sleep mode is set to S3 in BIOS, I have hibernation disabled (so no hibernation.sys file on my c drive)

When I put my computer to sleep then immediately wake it up, the login screen shows instantly, I type in my pass and it loads in like 0.5 seconds.

When I put my computer to sleep but wait for around 1-2 hrs before waking it, it shows the login screen instantly but after i hit login, it gives me the Welcome spinning circle thingy for like 20 seconds before I can see my desktop. That's like longer than my entire boot-up time excluding POST.

Event viewer doesnt show any performance delay, and I dont think my OS drive (OCZ vertex 2) has a cache so I have it disabled. I'm sure all my mobo drivers and graphic drivers are up to date.

Suggestions on why this might be so? Any idea would be much appreciated!

My laptop has this issue. I've just accepted the fact that it just does it and simply wait the time it takes or shut it down instead of putting it into sleep mode.

A more logical answer and an explanation would be nice though

Follow the instructions here in the first section of the tutorial (you only need install the tools and run the command - no need to go to the Analysis section), and create the "Standby+Resume" trace. Once you create the .etl file (as per the tutorial), zip up the file and upload it somewhere we can download it from. It will give us an idea of what's happening during resume.