I echo several of the posters here, namely -
- I store my photos on a separate data drive
- Cloned the boot/OS drive that came with the MP to the SSD using SuperDuper
- Have boot times of 31 sec from power-on
- Am using a G1 80 GB Intel drive - not even G2, so I have to limit the amount of data on the OS drive.
I would recommend buying a drive adapter and getting that SSD into one of the drive bays. If you look at this schematic of the motherboard, you can see that the optical drives take a different path into the south bridge (
http://att.macrumors.com/attachment.php?attachmentid=210818&d=1263465519), which might be the source of your poor performance. You could test the theory by plugging the SSD into a drive bay without fastening it into the sled - they do fit in there, but be gentle. It would get you at least through a test...
If that turns out to be the case you could pick up an Icy Doc adapter for less than 30 bucks and it works perfectly.