Here's the deal: I have the most recent 17" UMBP, purchased last August, 2009 and got the Snow Leopard Up To Date Disk, did an install on my stock Hard Drive and have been VERY happy with everything for the past few months. But... All these threads championing the latest Intel SSD G2 have finally gotten to me and, I just purchased the 80GB model from Newegg. It should be here tomorrow. Now, I ask that you confirm, please, a specific question about installation from my UTD disk and then advise. Please note that I've searched a ton about this subject. It's been answered in so many conflicting ways, I'm running it by you guys once again. So then, it seems that I can NOT install Snow Leopard from my UTD disk onto the new, fresh Intel SSD installed into my 17" UMBP. This is the case, yes? A workaround, I figure, would be to install Leopard 10.5 onto the new SSD and then to a clean and erase and then instal of 10.6 on top. I assume the UTD will read 10.5 and let the upgrade proceed. So, finally, a question: Should I be worried about installing a total of two OSs given that I (cheaply!) opted for the smaller 80GB SSD and that 10.6 doesn't support TRIM? Should I bite the bullet and buy the retail version of the upgrade disc and skip the double installation? I prefer to save the money, but I'm also concerned about putting so much data on the SSD before I even use it. I figure since I've already spent so much money on the Intel SSD, I should maximize performance. Thanks very kindly!