Here's one: I'm using the Mushkin Ventura Ultra 240 GB for a couple of days. Initially it had transfer rates of 200 MB/s when reading and 150 MB/s when writing. Now it has around 50 MB/s / 80 MB/s (read / write). Quite disappointing, but hopefully this is only an alignment and TRIM issue that can be solved soon by the support.
You just need to extract the archive, launch the program, choose the drive and then press the "All" button. If you can, please do some tests with the empty disc and others at various stages of occupied space.
Please post here the results.
ps: how much free space you had when you got 50Mb/s / 80 Mb/s (read / write) ? Take into account that most SSDs will slow down as they fill up.