I tried to upgrade my 2821 ISR from 12.4(7) to 12.4(11)T.
It was expected to solve a http inspect performance pb.
This seems to be solved but it introduced a new bug:
I am using a transparent proxy for http filtering based on policy routing (PBR).
Requests are redirected (as my debug shows) but take about 50 sec to be answered.
When going directly to Internet without proxy PBR, response is immediate.
So I went back to 12.4(7)
Any similar experience ?