LM1200 losing connection

I have been using the LM1200 for the past few months.  Normally works great - howver I have experianced this issue a few times and have yet to find a solution.

Will be up and running for about 2 hours.  The signal strength light will go solid red, the connection will fail, and a new browser page will open with the following error mesage.

"Browser Restart Required - Occasionally after visiting your moblie device pages, your browser may cache (store) invalid URL's that may effect your internet browsing experiance.  Restarting your browser will clear its cache and allow you to browse the internet without problems.

At the time this happens the only web page open is YouTube (live streaming) and I have restarted both the laptop and LM1200 - it will remain locked until the next day.