An inability to access, in particular, secure web sites may be due to an incorrect MTU (Maximum Transmision Unit) setting. The default is normally 1500 which may need to be reduced to 1492 with ADSL broadband, but to 1400 if using AOL.
If you are connecting via a broadband router, there may be an MTU setting in its configuration pages that you can adjust. If connecting directly from a single PC via a USB modem, there is a little application called "CyberTweak" with which you can easily alter the setting. Download it from click here
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