Ubuntu Installation :: Way To Get Liveboot Cd Of Previous Version Of Kubuntu That Worked?

I upgraded my system today from Kubuntu 10.10 (or whatever the last full release was) to 11.04 using the automated web process. I know, I know, I should have tested off a live cd or a thumb drive, foolish mistake. On upgrade the video card works, and it boots fine... but I have no keyboard and mouse. I checked the forums and realized that maybe it was a problem with the brand of keyboard and mouse I was using. so I've tried four manufacturers (even tried switching between wired and bluetooth) to no avail.I've also tried starting in recovery mode, but the problem persists.

To be specific, my bios sees the hardware just fine, and I'm able to hold down shift and pull up the selection options pre-OS, and select which one to run... and I can see the red optical light on the mouse no problem, so it's not a defect of either the motherboard or the input devices themselves. However, once in the OS, in recovery mode, or anything else, I'm left without a keyboard or mouse. As my system only has USB ports and not PS2, I can't check a hardware spec beyond what I've tried.Also, it doesn't work if I select the "boot into an older version of linux" which is odd.Can someone make a recommendation? Is there a way to get a liveboot cd of the previous version of Kubuntu that worked?