This is a brand new issue that I just came across while working on my new workstation, which has a 120gb OCZ Vertex 3 SATA 6.0 SSD drive as the primary boot drive into port #1 of the SATA 6.0 channel, running on a ASUS Maximus Extreme IV rev B3 motherboard running Windows 7 x64 Ultimate w/SP1. The symptom is your PC freezing for around 30 seconds or more and then resuming normal operation. I was getting these freezes throughout the first few days using this configuration.
The errors would also show up in the SYSTEM event log, called iaStor event ID 9.
In the BIOS, first make sure you are in AHCI mode. Then choose HOT PLUG=ENABLED for your SSD boot drive (which should be on port #1 of the SATA 6.0 controller).
Save changes and boot up and your problems will be history.