Hello we are running BorderManager 3.8/sp3 and we having the problem
described in the above mention TID. Workstations are set to use transparent
proxy. Basically the website is hosted on a virtual server. This server is
hosting 8 or 9 websites on the same IP address. So if users access one site,
eg. www.tricitynews.com on this server then they are no longer able to
access www.peacearchnews.com which is hosted on the same server. This
persists until the proxy cache is cleared and then they have the same issue
after somebody visits one of the above mentioned sites.

The TID says that this will be fixed with BorderManager 4.0. Has anybody
out there found a solution or a workaround in the meantime?