Slack64 14 Can't connect to website sub domains (intermittent problem)
I am having a strange problem which crops up now and then. I am connected to the internet, and can reach websites ok, but sometimes I can't get through to subdomains. For example, if I browse the NY Times site, I get all the info on the main page (nytimes.com) but with no formatting because the css for it is on a subdomain (css.nyt.com). Other sites which have content on subdomains come up "Server not found" (e.g. safaribooksonline.com is fine, but I can't access my.safaribooksonline.com)
Sometimes if I open a terminal window and ping the site or do an nslookup on it, it works, and then if I try to browse the site again it will work. But at other times ping can't find the site, and nslookup returns this error:
;; Truncated, retrying in TCP mode.
;; Connection to 192.168.1.1#53(192.168.1.1) for css.nyt.com failed: connection refused.
I have tried various browsers (firefox, opera, konqueror, lynx) and I am fairly sure it is not my wifi router and other computers in the house work fine (iPad, windows machine, and this laptop when I boot into windows)
So where should I start looking to find out what is going on?
(my laptop is an Acer 5542g, 4GB ram, 500GB HDD, ati mobile radeon graphics card, dual-booting win7 and slackware64 14 using lilo and EasyBCD)
Cheers for any ideas