Is it a brand new QM?, is this the first time you've had problems if it's an older QM?
Try a different LAN cable. I thought I had a problem, but a quick swap to another cable solved it. Also, try wiggling the LAN cable in the back of the QM and also at the PC end. Are the connection lights lit up on the LAN and the QM? Other than that it's possible some process on the PC may be causing the interruption, do a ctrl, alt, del and look at what processes are running.
Not an entirely scientific answer, but it may help as it's exactly what I do with mine if it drops out.
Please fill in your location so that someone nearby can offer help.
Cheers
Jem
Quote: "There is a theory which states that if ever, for any reason, anyone discovers what exactly the Universe is for and why it is here it will instantly disappear and be replaced by something even more bizarre and inexplicable. There is another that states that this has already happened.”... Douglas Adams 1952 - 2001