I've had no freezing problems with any review sample SSD, and these cover all the popular SDD controllers such as, Indilinx, Marvell, Intel, SandForce SF1xxx and SF2xxx series, Everest and Everest 2, LAMD, nor have I been able to induce any freezing.
I have a couple of SATA3 SSDs that can just drop off the SATA2 controller on an AsRock Z68 chipset mobo, but I'm pretty sure that the SATA spec on that board lives to near the edge for comfort, and the SATA3 ports on the same mobo have no such problems. I also have an Asus Z77 mobo, which just seems to be very stable, and has no such problems.
There is a culture that has arisen over the last couple of years that wants to blame the SSD for ever single little problem they might run into, as if nothing else could possibly go wrong in a system.
That doesn't mean that SSDs have no problems, I just haven't encountered any, so far.
If you should run into a problem with an SSD, the first thing you should do is clear CMOS on the mobo, and allow the power management tables to be re-built in CMOS. That's always a good starting point, and from what I've seen tends to cure many instability problems. To rebuild the power management tables, you simply run the "Windows Experience Index" application, then reboot the PC.
Doing this will also make sure that Win7 for example, knows it's an SSD that is connected and not an HDD.