There is a HUGE VARIATION in performance characteristics of USB Flash Drives. Perhaps this is one reason for the wide variation in performance that people are reporting. I suggest adding a speed test function to eBoostr that can do a quick test of the read/write speed of attached USB Drives. Many people have several different Flash drives around and if eBoostr could measure the Read/Write speed of them, people could then easily choose the fastest ones they have for eBoostr's Cache.
The importance of USB Flash Drive read/write performance characteristics should also be mentioned in eBoostr's installation and troubleshooting notes. It would not only aid people in selecting the appropriate Flash Drives to buy, but very likely reduce the amount of customer support needed from the eBoostr team.
Perhaps the eBoostr software could also report back to the Web Site the performance characteristics it measures for each brand and model of USB Flash Drive. A table could then be displayed on the web site showing that data. It would be a great way for people to find out which Flash Drives perform best with eBoostr.