One of our clients is having an issue where POSTBACK seems to be broken when they connect to our Sharepoint application.
When they navigate to a URL, an erroneous query string gets appended to the URL, so the end of the URL becomes:
this isn't something that appears on any other clients computers or ours internally. This is the only difference and it seems to be breaking their pages.
I had a quick Google and it seems that it's to do with a Microsoft ISA server, but I have no experience with that.
Is this a bug or setting on their ISA server?