KDE version: 4.6.2
Dolphin 1.6.1
Arch Linux

If I minimize a dolphin window and after a while click on it on panel to un-minimize, the window shows up all grey(like an empty window) and it takes around 5~10 seconds for dolphin to become usable.
System Activity(Ctrl+Esc) shows dolphin with CPU % column as'disk sleep' for as long as it takes for dolphin to load after un-minimize.
I also tried enable dolphin debug at kdebugdialog but it doesn't show up anything when this behavior happen.
Also it appears that the more time the window is kept minimized the more it takes to load it back up.

If there is any information I can provide please let me know.
Thanks

Could you please use strace to see which files Dolphin is trying to access when it hangs?

Could you tell me a pattern to grep for?
Logged just the time for when it was hanging ~3secs and still the log was huge.
If it helps in anything here is the ~3sec unfiltered log:
http://pastebin.com/R2nNgQFV

Ok, there seems to be some complaints from UDisks concerning unavailable resources, which could mean it hangs for a while whilst waiting for UDisks to return that message. How many hard disks / network resources do you have in your side panel?

19.5 GB... is /media/LMDE
arch is /
99.1 GB... /media/andre
OS is /media/OS
Tixati... is just a regular folder ("/media/andre/andre/Tixati Downloads")

and in case it's useful here is fstab:
http://pastebin.com/KYy9Ha1R

Thanks for helping out

Those both look fine. I'd check dmesg to see if a disk resuming from sleep is causing this delay, as the time frame and behaviour matches...