Assuming the config was saved numerous times... is there *any* possible reason why a switch would lose it's configuration other than performing a password recovery?
I tried to get into one of our Cat 3560's and none of my passwords worked. As a last resort, I tried the password combo when the device was first deployed, it worked.
When I got in, I noticed it was at the "Switch>" prompt. Did a 'sh run' and a majority, not all, of the parameters I configured were gone. I would have dismissed this as a fluke power cycle anomoly wherein it reverted back to it's original config other than we've noticed this same issue with routers at this particular site.
Before we go accusing someone of breaking into our equipment I want to make sure it couldn't be anything else.