header logo issue on home page only

Permalink
Hi
I have just downloaded and added 5.7 to my IIS machine all is working except the header logo which does not appear on any other machine on my intranet but all other pictures are working correctly.
the header logo always has localhost in the link
http://localhost/application/files/5414/1581/8546/gtves_logo.gif

but the images are working on all other pages both locally and on other pc's on the intranet.
Environment info

# concrete5 Version
5.7.2
# concrete5 Packages
None
# concrete5 Overrides
languages/da_DK, languages/de_DE, languages/el_GR, languages/fi_FI, languages/fr_FR, languages/it_IT, languages/ja_JP, languages/nl_NL, languages/ru_RU, languages/sl_SI, languages/sv_SE, languages/tr_TR
# concrete5 Cache Settings
Block Cache - On
Overrides Cache - On
Full Page Caching - Off
Full Page Cache Lifetime - Every 6 hours (default setting).
# Server Software
Microsoft-IIS/7.5
# Server API
cgi-fcgi

Any ideas would be very much appreciated.

Thanks
Rob

It is a change... but change in a good way : )