Hi Mrs D, i had a similar problem using ADSL, it worked fine for a while then no internet connection, with mine it was only a matter of turning off the router for a minute or so, then when i turned it back on, browser worked perfectly again.
just a thought,
oh yeah, this is handy guide for most browsers for clearing your browser cache http://support.lexis-nexis.com/lexis...cleID=wg_cache
Brian