my new mifi 4510L has good signal strength. i use it with a dell lap top which has windows 7/ intel pentium. problem; it keeps disconnecting from internet explorer with a message;; internet eplorer closed webpage to protect computer. a malfunction or a malicious add-on has caused internet explorer to close. i have two protection plans in place on the computer. is there a factory fault that we are not told about when you purchase this unit. bama2