Maybe its a power problem.
Is your Hubb7 powered by SATA or USB? The Leakshield gets its power from the USB connection. Specs say it can draw up to 500ma which is the limit of a typical USB2.0 port. The Hubby, if powered by SATA can deliver 1000ma max to all ports combined. Ports 1 through 3 share 500ma and ports 4 through 7 share 500ma. You may want to consider which port the Leakshield is plugged into and what other devices are in that port group. It may be better to plug the Leakshield USB directly into a USB2.0 header on your mobo. That way it should be able to pull it's 500ma max, and you can go into the Bios (depends on the mobo) and set that USB port to remain powered. This way your Leakshield will remain powered when the computer is shutdown. By shutdown I mean a regular shutdown, not turn off the PSU power switch or remove the power cord shutdown,
I just switched the jumper to SATA. I am going to monitor it for a bit and see if that helps. I'll also try another header on the motherboard just for the LEAKSHIELD. Thank you for the quick response!