Laurie (Thanks for the update) has posted on our Facebook page this recent issue that is affecting some users. Apparently it is a due to a recent Microsoft IE 9 patch:
It is apparently causing the same issue for Ebay amongst other sites.
Several 7.5 customers have report this issue this morning.
Link to details on the (probable) offending MS patch :
http://answers.microsoft.com/en-us/ie/forum/ie9-windows_7/july-2013-patch-bundle-now-makes-ie9-ask-are-you/37f8d15f-beec-4337-ab88-c08c93bbc94e
Here the IBM technote on this issue: http://www-01.ibm.com/support/docview.wss?uid=swg21643661&myns=swgtiv&mynp=OCSSLKT6&mync=E
Here the IBM technote on this issue: http://www-01.ibm.com/support/docview.wss?uid=swg21643661&myns=swgtiv&mynp=OCSSLKT6&mync=E