We have recently been looking at log management tools so when I had some free time I downloaded LEM to take it for a test drive.
I found the initial install and setup quick and easy; unfortunately the experience went downhill from there...
I found the interface very unintuitive, I had difficulties getting even the most simple of things working as I wanted them. I also found the Adobe AIR interface to be an overall poor experience.
We own and heavily use SolarWinds products from the Orion line (NPM, APM, NCM) and I absolutely love the approach of simplicity and ease of use while still having the ability to be flexible and do very complex things if you so choose. Unfortunately I didn't feel that LEM lived up to any of these expectations.
If LEM is going to be the SolarWinds answer to Log Management, I think there is a lot of work to be done to meet the high standards set by the Orion product line.