Running build 536. I have a small RAM cache of 192 MB (as well as a flash drive of 4 GB). A couple of times I noticed that "System C" shows up in the cache device window, although it is non-active (orange ! on it). It is also 192 MB so I'm guessing that eBoostr saw that the RAM cache storage file on my system drive and thought it is another cache device. I did Not add it ... it just popped up by itself. Each time I have right clicked and disabled it, rebooted and it disappears for another day or so. Very odd!