i setup adsl for a small office and at first it seemed to work fine - it died after a day or so and then came back up semingly on it own. sometimes the connection is up and router says should be working but i cant resolve dns at all - i can ping out beyond router (sometimes) to an ip address but other times it gives network unreachable - it really is intermittant and doesnt seem to have a pattern - ive tried fixed ip's/dns to rule out dns on router and confirmed correct dns with clara the isp and all the router settings, etc anyway to cut a long story short so far ive:- replaced the speedtouch 510 router with a netgear dg814 - same problems replaced the filter, twice - same replaced dsl cables - same taken all systems of and plugged into router with known working laptop and sometimes connection is there and internet is speedy, sometimes not at all and still sometimes that odd 'can ping ip address but not an internet address or get to the 'web' the isp is clara and they dont seem to know whats up either and have asked bt to go to replace the card in the exchange as they said one of the tests showed a loop back loss of 60 or higher and they said if was like that on day of install usually bt would not have let it go through - it is likely to be this making it all so intermitant? ive setup loads of adsl setups before and usually they either work or dont but ive never had one as intermittant as this - at first thought was a problem with virus as one of the office laptops turned out to be well infested but they are all confirmed clean and patched to date now anyway - totally confused about it and wondering if anyone else has seen this odd behavoir