this is my posting from another forum -
Since my broadband speed has been increased i have had some problems with the performance of my pc. After been connected for a while i suddenly loose the connection and the modem arrows in the notification area become red istead of green. When this happens i cannot open any other programs and when i try and restart the pc the only options i get is to switch user or go on stand-by. I have a voyager 105 modem supplied by plusnet.