Found this while going through xda-developers site.
You will notice a big difference in loading speeds (Photos, videos etc) and camcorder recordings of 720p will run smoothly without lags or pauses in recording. As it did to mine after downloading the zip file.
Here is the link explaining about SD Card speedread! http://forum.xda-developers.com/showpost.php?p=10760186&postcount=47DOWNLOAD FLASHABLE ZIP HERE:
Courtesy of akazabam @ AndroidForumshttp://www.mediafire.com/?eto9uoz2aml66cv
Boot into recovery, flash, reboot.
Hope it helps speed up your sd card as it did with mine!
Here is the original thread...http://forum.xda-developers.com/showthread.php?t=921530
If you have root explorer installed, open it up and go to:
long press on read_ahead_kb, select edit, if you see 128
your good to go. If you see 4
, then change it to 128.
*I have a stock class2 16g sd card