I'm hoping someone may have had same issue or may have a fix for a weird issue I am having with My ISA550.
I have recently updated the firmware on our ISA550W to 1.2.19 and it seems ever since then any connection to a https site takes ages!
Our config is dual Broadband lines with policy based routing used to route internet traffic over our 2nd line. Even if I turn off the Policy Based Routing internet access is very slow to HTTPS.
I have checked the next hop router by using one of our public IP's on the back of it and all works Ok with no issues, so i can only pinpoint the issue to the ISA.