google unusual traffic

[#1]

Hello
Recently i have been getting a lot of "we have detected unusual traffic errors" when trying to search on google, it then gives me a capcha that i have to solve before i can continue.
Should i be worried by this?
for info we are a total Mac household there are no pc's at all
can this be a corrupted router?
Thanks
Mark

[#2]

That's really odd.
Mind giving this a try please?
    Launch Network Utility. ...
    Click Traceroute.
    Enter the domain name for which you want to perform a traceroute: ...
    Click Trace.
    Select the results, and then right-click and select Copy or press COMMAND+C to copy the text.
    Paste the text into a text editor (TextEdit, etc.) and save the file.

[#3]

Then of course either attach that file to your response here in this forum or equally paste the output in the response.

[#4]

sorry for the delay I thought i put an alert on the thread but obviously didn't as i didn't get a notification of new posts and Ive only just got round to checking.
this is what i am getting at the moment to BBC and google
Traceroute has started…
traceroute: Warning: bbc.co.uk has multiple addresses; using 212.58.244.20
traceroute to bbc.co.uk (212.58.244.20), 64 hops max, 72 byte packets
1  192.168.1.254 (192.168.1.254)  3.952 ms  51.810 ms  100.117 ms
2  lo0.11.central11.ptw-bng01.plus.net (195.166.128.171)  20.324 ms  20.648 ms  20.127 ms
3  irb.11.ptw-cr01.plus.net (84.93.249.17)  19.508 ms  20.515 ms  20.008 ms
4  kingston-gw.thdo.bbc.co.uk (212.58.239.6)  20.411 ms  20.847 ms  20.494 ms
5  * * *
6  * * *
7  ae0.er01.telhc.bbc.co.uk (132.185.254.109)  23.943 ms  21.193 ms  20.975 ms
8  132.185.255.149 (132.185.255.149)  21.199 ms  23.606 ms  21.143 ms
9  fmt-vip71.telhc.bbc.co.uk (212.58.244.20)  20.080 ms  21.053 ms  21.010 ms


Traceroute has started…
traceroute: Warning: www.google.co.uk has multiple addresses; using 212.56.71.59
traceroute to www.google.co.uk (212.56.71.59), 64 hops max, 72 byte packets
1  192.168.1.254 (192.168.1.254)  101.365 ms  99.061 ms  99.751 ms
2  lo0.11.central11.ptw-bng01.plus.net (195.166.128.171)  20.342 ms  20.493 ms  19.554 ms
3  irb.11.ptw-cr01.plus.net (84.93.249.17)  20.404 ms  21.235 ms  21.254 ms
4  ae1.pcl-cr01.plus.net (195.166.129.1)  21.943 ms  20.858 ms  21.523 ms
5  plusnet-lcy3.plus.net (212.56.71.59)  21.949 ms  21.911 ms  21.711 ms

To be honest I have not had the error for a bit so it may have cleared itself