Browser set up.

[Walter]

I have a problem that has bugged me for a while needs sorting out.
I  have trouble viewing certain websites. I have Ubuntu 7.10, 8.04B and 
have tried a variety of Linux OS, and different browsers.
I cannot view my own website, my ISP www.Plus.net and a bank, 
www.sainsburysbank.co.uk. Most other sites and banks are OK .

Also others don't seem to have this trouble in their Linux setup.  F/F 2 
& 3 have no trouble with any of these site in 'XP'.
It seems the problem is the typical setup and difficult sites.

My spec here is reasonable, 2GB memory, Amd 3200XP, adsl usually about 4 
Mb down 0.4 Mb up. I have 3 others systems running a lesser specs, all 
with the same trouble.

My own page, www.walterreed.co.uk hosted by orange.co.uk, starts to 
download the top adverts header,(not mine) but then sticks and gets no 
further. The difficult header is not my inclusion but a penalty of a 
free webserver! 

Synaptic tells me I have:
'flashplugin-nonfree,(the description mentions Adobe)
'sun-java6 plug in'
Adobe flashplayer_9_linux.
(no Php(?) is installed )

Are there any other plugins/libs I should have?

Suggestions from this group would be appreciated.

-- 
Regards,
Walter