Originally Posted by mark17j
your problem is wireless interference from neighboring routers.
Assuming u have the cisco ep2425 Http://192.168.1.1
"Set Up" under wireless click "Basic" change to channel 11, that's the one I use with no issues.
not necessarily, it could be more or less anything and how do you know that his next door neighbours either side of him aren't already using channel 11?
do a speedtest on www.speedtest.net
and if you can get a decent speed there, youtube shouldn't be buffering.
as a (very) rough guide, 3mbps should comfortably get you 720p video on youtube without any issues. you can right click on any youtube video and choose "show video info" to see what the transfer rate is and other relevant statistics about the stream.
also, you can check your youtube speed history here: http://www.youtube.com/my_speed
if you are having speed issues on speed tests as well, then it *could* be wireless interference. the only way to rule it out completely is to test again via a wired connection.
if that sorts the problem THEN it's time to change your wireless channel, but randomly changing it to various arbitrary channels and hoping it works, then re-testing each time is going to take quite a bit of time if you live in a busy residential area.
download and install inSSIDer
and do a walkaround your house with your laptop running it and you will see a graph showing you all the wireless networks in your vecinity, which channels they are using and which of those channels overlap with yours. any overlap is going to be eating into your own wireless signal to some extent, the more there are, the worse it could be.
the solution is to find a wireless channel with the least interference from neighbouring channels, which you will be able to see from your wireless survey with inSSIDer. i'd recommend walking round your place and going to every window (upstairs and down if you have them) and hanging there for a minute or two just to see what pops up.
once you've done that, you should hopefully be sorted.
if you're still not sorted then it's time to call UPC. collect as much info as you can to send off to them. reboot your router, do lots of testing at various times of the day and night and make a log of the tests you do to give them a clearer picture of the issues. the more they know about the issue, the more likely they are to be able to find a solution.