I am using the latest build of eBoostr beta. I seem to have few, if any issues, with hypermemory cards, XP 32-bit, XP 64-bit, and Vista 32-bit.
This version, for me, seems highly stable in my scenarios, including 3Ware RAID cards, Marvell, J-Micron, and Sil controllers, as well as SuperSpeed RAM Drives and RAID 0 4-drive SSD arrays. I've tried to break it, goof it up, drop drives between boots, you name it. Worst case, I have to rebuild the cache. Speeds seem to be reporting correctly now was well.
Just an FWIW.