Well, you weren't having kernel panics, you installed new RAM, and then you started having them, so yes, there's something to be concerned about--your RAM could be DoA.
As suggested, try swapping it out for the old stuff. If you no longer have any panics, call OWC and get your RAM RMA'd for a new pair--they're good with warranty support so far as I know, and I've always liked their stuff.
If the panics keep happening, then there's either a coincidental software glitch--the only good way to test is an OS reinstall--or something coincidentally broke at the same time as installing the RAM (or, I suppose, you broke it with static, but that's unlikely). In which case the options would be to either live with it, or call Apple if it's still under warranty.
You mentioned Rember, but have you tried running Apple's hardware test disc that came with the computer? It can occasionally find things, although a clean bill of health from it doesn't guarantee nothing's wrong.