After trying the usual methods of trying to wipe my USB flash key and after what another user posted after trying to wipe their flash drive to do a clean install of FreeNAS, I found this link interesting. I've tried dd, formatting, installing Ubuntu (Unsucessfully) using methods which have worked fine before.
Here's a snip of the article:
http://www.infoworld.com/t/solid-state-drives/flash-based-solid-state-drives-nearly-impossible-erase-263
Here's a snip of the article:
Researchers from the University of California at San Diego delivered a paper at the FAST-11 Conference in San Jose, Calif., last week that shows it's almost impossible to reliably erase data from a solid state drive.
http://www.infoworld.com/t/solid-state-drives/flash-based-solid-state-drives-nearly-impossible-erase-263