I'm tempted to go back to Caviar Black, SSD/Intel/Apple are not ready for the playground.
I wouldn't be tempted, I would go back to the Caviar. I'd make sure 10.6.2, your software, and any additional hardware you have plays nice with that and the disk doesn't become "corrupt" over time. I don't know how much time to give it, but when you're satisfied, clone that system over to a FW Drive or something so at least you know you have a good system tucked away somewhere.
And this didn't happen with 10.6.1, right? How long have you been using the SSDs?
It gets me that this is something that appears over time. That I believe you're saying each time you manage to get DU to report no errors, sometime afterward it does again. Well, as I recently had pointed out to me again, flawed drives do crack under load. But two of them? And for something you really don't want to hear, many of us out here using SSDs have just not seen this, so it's hard to think the fault lies with 10.6.2. Granted I have Vertex and 1st gen 80gb Intels, could this be something only affecting the second gen Intels? I haven't heard that reported either, but who knows, yours may be the first of more to come. I know there are people here using the 2nd gen, maybe they'll write in (MsB, where are you?). From what I've read, the Intels have had more issues than other SSDs, but not of this nature as far as I know.
So again, for my own clarity of mind only, you can get the problem fixed, no errors reported, and a short time later with use they just come back again, and you're saying that this has only come about since 10.6.2. It's bizarre.
Well that leaves one fairly obvious thing to do and one thing you really should do.
On the last, get DiskWarrior, it really is an outstanding program.
On the first... Go back to 10.6.1.
And on that also, tell us how long you've used 10.6.1 with the SSDs. Also, did you use the combo or Software Update to get to 10.6.2? Doing that, using SU, really has been a source of problems in the past.
Also, while every Mac of the same model should be the same, frequently that doesn't seem to be the case. 1 person is affected by something, 10 people aren't. Can you yourself point to anything that may be making your Mac behave differently than the rest. Any special circumstances like heat or electricity?
When I switched to SL it was a disaster for me until I did a clean install and rebuilt my system again. Many people were able to migrate things over successfully but that simply never worked for me. Not one thing could I migrate without it taking a toll on the performance of my Mac. I could never figure that out.
I'm trying to think of things that might make SSDs more prone to damage than standard disks. But then again, it's not damage is it. It's corruption. Anyone here know exactly what that means? There is data and file corruption, but disk corruption? Are they the same?
Well, lastly, and again, I can only think that by going back to an earlier OS can you be sure it's 10.6.2. If it turns out to be 10.6.2 only, then I would be glad to admit that's it, and be wary for my own benefit. In my case though I use DU, Diskwarrior and others utilities like Superduper a lot. I just haven't seen any indication of something similar happening. Please look into getting DiskWarrior. It's pricey but it's saved me on more than a few occasions and really I think it is worth it even if it is the only Utility program you can afford.
I'd like to see your SSDs working with 10.6.2, but if they can't and they work well with an earlier OS, personally I'd drop 10.6.2 and stick with the SSDs. On the other hand if you have only a certain amount of time to get a refund on the SSD's, I'd exchange them for new ones or get a refund and buy a different make of SSD.
It's a difficult issue and you must be extremely frustrated by now. But hang in there and I bet you'll get this sorted out.
