Software :: Slow Open / Save File Dialog System Wide

When ever I try to open or save a file in any application the spinning wheel is shown and the dialog takes from 5 to 20 seconds to display. Once it is on screen the speed returns to normal. I have a G5 Power Mac 1.6 GHz (Single Processor) 2 GB RAM (crucial) 2 SATA hard-disks (original 80 GB used as a clone for the 160 GB - I use carbon copy cloner) Everything else is as standard with the Mac. This problem started with 10.3 and may have been at the same time as installing the second 160 GB hard-disk, cloning the original to the new one, then changing the SATA cables around to make the new hard-disk on bus A. I then upgraded to Tiger but the problem still persists. I have tried repairing permissions and have used support tools like cocktail etc to check for hard drive issues and clear the cache files.

Also, on installing the second hard-disk, I also tried swap cop to change the swap file to the backup hard-disk. This did not work so I manual modified the files to return them to the original state. I did this while the system was running 10.3. I take it on upgrading to 10.4, the swap file config would have been fixed anyway? Everything else on the system seems fine. If nothing specific is found I may try removing the old hard disk.