Our Exede is suddenly not dependable. Two months ago I saw "berts wifi" showing up in our networks. I switched it to Private; then kept getting bumped off. Reluctantly returned to Public with decent success. Not thrilled about keeping it Public. Then 2 nights ago new pattern: no internet from about 6:30 pm on. Anyone else experienced this? Could we need new modem or does Satellite get bogged down with users?