i released version 1.0.2 of my SD-Booster app on the market right now.
This version fix a root permission bug found by Andreas and include tweaks for some devices (e.g LG Optimus Speed, Motorola Milestone).
Coming soon: New features will be released with version 2.0.
SD-Booster speeds up your SD-Card (external memory-card) up to 40 times! Enjoy a new feeling of speed on your Android smartphone anytime and everywhere you are. Starting apps, listing to your favorite music or just swapping data with your PC ? Whatever you do, the SD-Booster improve your phone speed!
SD-Booster needs root permission to run, otherwhise SD-Booster can't do anything!
For experts only: App works with read_ahead_kb value