Internet Problem

[#1]

Hi,
I seem to have developed a problem that I cannot resolve. My internet connection is working fine except that I can no longer connect to a site that I use every day, I get the dreaded 'the page cannot be displayed' message. I cannot 'ping' the site either, yet have no problems with other sites. My friends have no trouble accessing the site, nor did I up to yesterday. I have no 'blocks' on the  firewall that I know of. Any ideas please ?
Mike

[#2]

Very difficult to diagnose without further information. The site url would be a good start.

[#3]

Try rebooting PC and router.
Post the URL so others can try - if we can access it it's most likely a local problem to you.

[#4]

The site is:-  www.summitsbase.org.uk (92.48.74.22). PC & Router re-booted several times already, but makes no difference.

[#5]

Don't have any issues here, can browse and ping it.
Here is my tracert:
Tracing route to summitsbase.org.uk [92.48.74.22]
over a maximum of 30 hops:
  1    1 ms    1 ms    1 ms  192.168.0.1
  2    37 ms    36 ms    35 ms  lo0-plusnet.ptn-ag1.plus.net [195.166.128.123]
  3    36 ms    36 ms    35 ms  ge0-0-0-303.ptn-gw01.plus.net [84.92.3.9]
  4    36 ms    35 ms    35 ms  te2-2.thn-gw1.plus.net [212.159.1.54]
  5    37 ms    36 ms    37 ms  lonap1.enta.net [193.203.5.134]
  6    35 ms    37 ms    37 ms  te5-3.telehouse-east2.core.enta.net [87.127.236.37]
  7    36 ms    36 ms    36 ms  ge-5-2.the.uk.euroconnex.net [87.127.231.90]
  8    47 ms    36 ms    38 ms  pri.bsq2-the.as29550.net [217.112.81.86]
  9    37 ms    37 ms    36 ms  surrey.webhosting.uk.com [92.48.74.22]
Trace complete.
what does yours look like?

[#6]

Loading fine here.
Can you post a tracert - http://usertools.plus.net/tutorials/id/34 or use WinMTR
What DNS servers are you using - run ipconfig/all in a cmd/dos window

C:\Documents and Settings\Peter>nslookup www.summitsbase.org.uk 212.159.6.9
Server:  ptn-cdns01.plus.net
Address:  212.159.6.9
Non-authoritative answer:
Name:    summitsbase.org.uk
Address:  92.48.74.22
Aliases:  www.summitsbase.org.uk

C:\Documents and Settings\Peter>nslookup www.summitsbase.org.uk 212.159.6.10
Server:  ptn-cdns02.plus.net
Address:  212.159.6.10
Non-authoritative answer:
Name:    summitsbase.org.uk
Address:  92.48.74.22
Aliases:  www.summitsbase.org.uk

C:\Documents and Settings\Peter>nslookup www.summitsbase.org.uk 212.159.13.49
Server:  pth-cdns01.plus.net
Address:  212.159.13.49
Non-authoritative answer:
Name:    summitsbase.org.uk
Address:  92.48.74.22
Aliases:  www.summitsbase.org.uk

C:\Documents and Settings\Peter>nslookup www.summitsbase.org.uk 212.159.13.50
Server:  pth-cdns02.plus.net
Address:  212.159.13.50
Non-authoritative answer:
Name:    summitsbase.org.uk
Address:  92.48.74.22
Aliases:  www.summitsbase.org.uk

C:\Documents and Settings\Peter>nslookup www.summitsbase.org.uk
Server:  resolver1.opendns.com
Address:  208.67.222.222
Non-authoritative answer:
Name:    summitsbase.org.uk
Address:  92.48.74.22
Aliases:  www.summitsbase.org.uk

C:\Documents and Settings\Peter>tracert www.summitsbase.org.uk
Tracing route to summitsbase.org.uk [92.48.74.22]
over a maximum of 30 hops:
  1    <1 ms    <1 ms    <1 ms  my.router [192.168.0.1]
  2    39 ms    66 ms    33 ms  lo0.plusnet.thn-ag2.plus.net [195.166.128.93]
  3    33 ms    34 ms    33 ms  vl604.thn-gw2.plus.net [84.92.4.170]
  4   214 ms   246 ms    72 ms  te2-3.thn-gw1.plus.net [212.159.1.57]
  5    33 ms    41 ms    32 ms  lonap1.enta.net [193.203.5.134]
  6    33 ms    43 ms    33 ms  te5-3.telehouse-east2.core.enta.net [87.127.236.
37]
  7    33 ms    32 ms    50 ms  ge-5-2.the.uk.euroconnex.net [87.127.231.90]
  8    68 ms    43 ms    34 ms  pri.bsq2-the.as29550.net [217.112.81.86]
  9    64 ms    33 ms    44 ms  surrey.webhosting.uk.com [92.48.74.22]
Trace complete.

[#7]

Tracert results
1    2 ms    3 ms    2 ms  192.168.0.1
2    32 ms    23 ms    22 ms  lo0-plusnet.ptn-ag2.plus.net [195.166.128.53]
3    21 ms    21 ms    21 ms  ge0-0-0-204.ptn-gw02.plus.net [84.92.3.93]
4    22 ms    22 ms    25 ms  te2-2.pte-gw2.plus.net [212.159.1.106]
5    21 ms    21 ms    21 ms  te2-4.pte-gw1.plus.net [212.159.1.101]
6    70 ms    21 ms    21 ms  lonap2.enta.net [193.203.5.135]
7  204 ms  204 ms    43 ms  ge-5-2.the.uk.euroconnex.net [87.127.231.90]
8    23 ms    23 ms    23 ms  pri.bsq2-the.as29550.net [217.112.81.86]
9    *        *        *    Request timed out.
0    *        *        *    Request timed out.
1    *        *        *    Request timed out.
2    *        *        *    Request timed out.
3    *        *        *    Request timed out.
4    *        *        *    Request timed out.
5    *        *        *    Request timed out.
6    *        *        *    Request timed out.
7    *        *