I'll post first of all by saying we get full speed from our 50mb broadband 99% of the time but since yesterday it has got seriously slow, i'm talking it taking 10 seconds to open Google, or even just trying to post this thread took me about 15 seconds from when i pressed the 'New Thread' link. Have tried downloading from Gamershell + Newsgroups but it's pointless, i'm not getting over 20kb/s from anywhere? I have had the modem and router (dir-615) powered off for 5 hours today while i went out, just come back in, powered on and it's exactly the same. 
Tracerts to BBC have a constant ms of around 700 and '*' some of the hops -
C:\Users\Richie>tracert bbc.co.uk
Tracing route to bbc.co.uk [212.58.241.131]
over a maximum of 30 hops:
  1     *        *      627 ms ****.cable.virginmedia.com [81
.97.52.1]
  2     *      600 ms   684 ms  midd-core-1b-ae3-2466.network.virginmedia.net [2
13.106.237.225]
  3   720 ms   672 ms   682 ms  manc-bb-1b-as6-0.network.virginmedia.net [213.10
5.75.49]
  4   604 ms   689 ms   713 ms  manc-bb-1a-ae0-0.network.virginmedia.net [62.253
.187.177]
  5   887 ms   590 ms   627 ms  nrth-bb-1b-ae1-0.network.virginmedia.net [212.43
.163.82]
  6     *      733 ms   747 ms  nrth-tmr-2-ae6-0.network.virginmedia.net [213.10
5.159.34]
  7   681 ms   716 ms     *     tele-ic-1-as0-0.network.virginmedia.net [62.253.
184.2]
  8     *        *      631 ms  pos6-1.rt0.thdo.bbc.co.uk [212.58.239.237]
  9     *      691 ms   759 ms  212.58.238.153
 10   637 ms   686 ms   633 ms  virtual-vip-231.thdo.bbc.co.uk [212.58.241.131]
Trace complete
There's no faults logged on VM pages for my area so i'm at a loss? 
Any help is appreciated 

---------- Post added at 17:36 ---------- Previous post was at 17:31 ----------
Would you believe it, literally after posting the new thread it's started working ok again!? I'm sorry, mod might want to delete this thread!