Okay, not sure why this happens and I've been wondering about this for a LONG LONG time, but why is it that applications seem to take forever to launch the first time you launch them after booting up? If you quit the app and at some point relaunch it, then it almost opens instantly. However, if you shut down or restart the computer at some point and then launch the app again, it takes ages to launch again, but only the first time. This behaviour happens with both Apple and third party software.
I have checked all the usual suspects: hard drive space (only 52% used), hard drive hardware (passes diagnostic scanning), RAM (I have 8GB), desktop (it's not cluttered and contains no folders), disk permissions (verified and repaired), software (always updated with latest versions), widgets (don't have many installed), wallpapers (never use animated wallpapers), login items (hardly any), PRAM & SMC (I've reset these). So, basically, I think I've done everything except reformat the drive and reinstall OS X.
My system specs are as follows:
Model Name: MacBook Pro
Model Identifier: MacBookPro5,1
Processor Name: Intel Core 2 Duo
Processor Speed: 2.53 GHz
Number Of Processors: 1
Total Number Of Cores: 2
L2 Cache: 6 MB
Memory: 8 GB
Bus Speed: 1.07 GHz
Boot ROM Version: MBP51.007E.B06
SMC Version (system): 1.33f8
Macintosh HD Capacity: 999.86 GB (999,860,912,128 bytes)
Macintosh HD Available: 472.71 GB (472,705,077,248 bytes)
So, as far as I can tell, I've got no explanation for this behaviour. It's very frustrating/annoying - but not enough for me to want to do a whole format/reinstall.
Any suggestions anyone? If not for a solution, what about an explanation as to what's happening?