So the wife let me do another couple of hours on the site before we left
You should now find ALL missing solutions and reviews and all their associated comments and votes are back on the site!
I've had to do a little work to match them up again to the correct games and achievements, but hopefully that's worked properly.
If you have re-submitted your solution/review since the crash, you will currently have 2 live ones. If you could decide which one you want to keep and remove the other one that would be great. After a week or so I'll remove any dupes automatically (I'll remove the one with the least votes), but if you want to choose in the mean time then you have that opportunity.
Thanks folks, I really am off now!