I finally got some mining going in linuxcoin. My problem stemmed from the syntax (or lack of) during one of the options.
I type start_mining in a terminal (bottom left coin, click, accessories), enter option 1, and for the option 'Enter url and press enter' I use something like this 'poolminingwebsite.com -p 8334'. I was trying something like poolminingwebsite.com:8334.
The name and password are pretty obvious and need to explanation. For some reason, before all that, when I would type all this into the terminals options, the terminal that would open to display the mining information would open and close instantly. It wasn't until I opened ati sdk license and amd overdrive did it actually not just close instantly. I opened the ati sdk license thing assuming that that was the problem, tried to mine a few times with no success, then opened the amd overdrive ctrl program and then I made some progress.
I still haven't figured out the phoenix thing. A few seemed to mention hashkill being really good as well, maybe I'll give that a shot.
Also, I am still trying to figure out the persistence thing, 'sudo df' did give me a list of stuff. However, '/dev/sdb1 10520641051712 352 100% /live/image' is the only line that seems to relate to anything further. I see nothing relating to 2 sets of 4 random numbers and letters. Perhaps I'll reformat the flash drive just to be sure I followed all the steps correctly.
@no_alone Thanks for the response. I was under the impression that phoenix might be capable of giving better mhash performance, which is why I am eager to compare. I have tried both of those options for the kernel option but the mining terminal opens and closes instantly. This doesn't happen when I choose option 1.
As I've noted previously, I am a complete linux newb. I am pretty sure many obvious details are sneaking past me, I am sorry for asking to have it spoon fed to me : P.