Our computer (Dell laptop inspiron 600m) is suddenly (like overnight) very, very slow. We have SBC yahoo DSL wireless internet. We have not installed anything new, nor have we downloaded anything recently. I am not talking just a little slow, it will take over 5 minutes to open a new page & it frequently gives up trying & just displays the page cannot be displayed page instead & I have to try all over again. I cannot even send emails, it takes soooo long that it gives up & says page cannot be displayed. I have brought up the control-alt-delete, but don't see anything unusual & everything is listed as "running". Once when I tried to restart the computer it was taking forever & gave me a message the "socket" was not responding. I told it to end now & when it restarted I went into the control panel to find it & there is nothing there that says "socket" at all. I have updated antivirus & scanned & nothing came up. I ran the spy ware scan & removed the tracking cookies, nothing else came up & it has made no difference. We also have a firewall which is working properly & an internet filter that is working properly. We have 45.5 GB free on the hard drive. I just don't get it, can anyone help me out with this, it's beyond tolerable.