IE6 problems

Go to RUN and type ping -t www.yahoo.com. Do you get responses or just request time out??

Be sure that the firewall (windows firewall and a 3rd party firewall if present) alows acces to internet. Note that some antiviruses have a builtin firewall.

Are you using a proxy? If yes try to open webpages without any proxy. If no use a proxy (there are alot of free ones)

Are you having this problem with only some webpages?? If so be sure to scan for addware and viruses.

If all fails try to use another web browser and see if you still get the same problems.

Recomanded web browsers (personal opinion):
1. Opera
2. FireFox

GooD LucK!

Have you clear your Internet Cache recently.

Tools > Internet Options > Delete Cookies , Delete Temporary Internet Files ( including offline content and Clear History.

Also check for Adware and Viruses.

https://www.techrepublic.com.com/5247-6257-0.html?id=363666

Make sure you don't have 2 firewalls running ie the Default XP and a 3rd Party.

Not an answer, but a question:

Is it always the same pages that don't open, and always the same pages that do? Or is it that sometimes a particular page will open fine and sometimes it just doesn't?