Thank you!
Moving to a USB 2.0 seems to have solved it for me, it's been running without freezing for 3 hours now, I'll leave it overnight see how it goes.
I wish Line 6 would step up to the plate and at least give us some pointers, rather than leaving us to fend for ourselves.
We live in a world of weasels where no one wants to say anything because they are afraid of being accused or admitting there might be a problem. Thankfully though open source software is gaining strength and we depend less and less from closed source companies. It would be nice if Line 6 just did hardware and left it's software open source, we'd really have some great stuff to work with! Just my 2 cents.
Tomás