[How-To] Root the LG Optimus V

Thanks! It took me a little bit, as I kept getting "waiting for device..." Apparently something on my phone had switched debugging back off. I flipped it back on, and superoneclick worked.
 
Can someone help me? I followed the instructions exactly, but when I type in "su" on the Terminal Emulator on the phone, I get this:

link_image[1997]: failed to link su
CANNOT LINK EXECUTABLE

And when I use Root Checker, it says I'm not rooted, but it also says I have BusyBox installed correctly. What can I do to fix this?