Slow as hell writing speed, SanDisk Cruzer Edge 32GB.

USB Flash Drives All USB Flash Drives
6

This approach might help:

http://forums.sandisk.com/t5/All-SanDisk-USB-Flash-Drives/Sandisk-Extreme-64GB-Slower-write-speeds-after-system-format/m-p/329435#M9360

Make sure you backup all your files before trying it.