Well..I think this is the end of this story.. LR has completely quit..
I would love it to be a failing hard drive, but the problem is completely isolated to LR. Yesterday it would crash while importing, now it won't run at all.
Last night I made a copy of all the pertinent folders (presets, catalog etc) uninstalled LR, rebooted, did a fresh download and installation and deleted the preferences folder and optimized before launching it. LR lasted but a few minutes into a test session this afternoon.
As a side note, is there any chance the problem is related to my tablet? After LR crashes it disables the tablet...
LR v3 Beta is running with no complaints, as are all my other applications. But v3 isn't an option as I would lose way to much in the conversion to v3 when it is launched.
So, for lack of anything better, I have to think there is something wrong in the catalog. I am hoping there is some rogue scrubbing utility we don't discuss often here that will clean up the database, but I suspect that is a pipe dream. For now I find myself stuck with a boat load of work to get done. I have no idea what to do next...
+++edit+++
So out of desperation, panic and confusion, I've been going back to old images, about 6',''' so far, and have been writing the changes to XMP, just to be sure I don't lose anything. I do regular back ups so I am not worried about losing Master files, but up until recently I wasn't as diligent as I should have been with writing edit info as I work on the DNG files..
LR hasn't missed a beat..it's been churning for nearly two hours.
I have a suspicion the problem is in the files from a recent shoot (though I am not sure), because it has been the one shoot I have been spending the most time in.
I have deadline on these images that is six days away. If I purge these images from LR, and do a fresh import from my back up images, those with no edits, would there be any benefit?