try running a tracert to the site and see if it falls off anywhere, heres mine for comparison:
traceroute to
www.villatalk.com (193.19.159.11), 30 hops max, 38 byte packets
1 192.168.123.254 (192.168.123.254) 0.418 ms 0.390 ms 0.356 ms
2 10.141.0.1 (10.141.0.1) 7.681 ms pc-62-30-246-129-do.blueyonder.co.uk (62.30.246.129) 8.674 ms 8.941 ms
3 pc-62-30-246-37-do.blueyonder.co.uk (62.30.246.37) 33.255 ms 9.299 ms 9.721 ms
4 uddi-t3core-1a-ge-010-0.inet.ntl.com (80.3.16.69) 21.534 ms 21.963 ms 31.388 ms
5 lee-bb-a-so-220-0.inet.ntl.com (213.105.175.189) 21.588 ms 21.363 ms 24.104 ms
6 nth-bb-b-so-100-0.inet.ntl.com (62.253.185.101) 21.426 ms 20.734 ms 22.369 ms
7 * * *
8 te4-3.mpd01.lon02.atlas.cogentco.com (130.117.14.141) 19.386 ms 61.895 ms 20.722 ms
9 te9-3.mpd02.lon01.atlas.cogentco.com (130.117.1.17) 215.422 ms 227.437 ms te8-3.mpd02.lon01.atlas.cogentco.com (130.117.1.201) 218.811 ms
10 vl3493.mpd01.lon01.atlas.cogentco.com (130.117.2.17) 19.947 ms te3-3.mpd01.lon01.atlas.cogentco.com (130.117.2.25) 19.656 ms vl3493.mpd01.lon01.atlas.cogentco.com (130.117.2.17) 22.992 ms
11 tridentnet-uk.demarc.cogentco.com (149.6.83.118) 19.666 ms 21.567 ms 21.788 ms
12 gi-0-1.sw00-hex.dist.switches.tridentnet.net (89.20.192.26) 22.275 ms 22.744 ms 22.078 ms
13 host00a.bewdley.net (193.19.159.11) 25.258 ms 20.795 ms 22.412 ms