Interner extremely slow when going through thin clients
I am having a problem on my network, the internet is soo slow and crashes often, some websites work ok for a short while some dont and students just get the spinning wheel.
The homepage is bbc.co.uk, which just hangs - if they open a new tab it works for most other internet pages but is slow or will crash.
The terminal servers have not been changed , other than java and flash updating to current version
Terminal Servers are Win2008 R2 Standard, I have looked a the citrix gateway, I can t see anything obvious.
The firewall is not blocking it, as i put bbc into an explicit white list, but still the same.
I am running out of ideas, any help would be useful, thanks