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**It's a high speed memory stick. Not a Solid State Disk. I meant "SD" as in an SD memory card. 

4 gigs for about $19. If it dies in a month, it's not a big loss :)**
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Yeah I realised that. Actual SSDs have controllers with sophisticated wear-levelling so it wouldn't be a problem with them anyway. Cheap flash-memory cards and sticks do not do wear-levelling very well (or at all). But in case of cheap sticks, the possible loss isn't that big, as you said.

I'm glad you found the RAM disk solution is working for you. It's also much faster to write to memory than to USB stciks, though I don't know if it matters in this case at all.