I'm seeing the same behavior on an Intel 320 series 300 GB SSD running Win 7 SP1. I tried two different Win7 images and tried in two different E6410 computers. The firmware is up-to-date. The fan tends to stay on and the power light never goes off. I don't have this problem with a standard mechanical drive.
I've since discovered that if I change the SATA mode from RAID to AHCI in the BIOS and *reinstall* Windows that everything functions normally.
For the record, before I reinstalled Windows 7, I tried the response at Changing from RAID to AHCI - Microsoft Answers marked as the "answer". This did allow me to change the mode without reinstalling Win7, but it only resolved the issue *sometimes*. The full reinstall completely corrected the problem, so far.
Hope this helps someone!