I have done a search for this issue and came up with nothing. I have a new installation of both Mambo 4.5.2 and SMF 1.1 RC2. Gzip compression is now turned off (yes it was on before).
This issue is that when I click on the main menu "Forum" link the SMF system opens up inside my Mambo site, even though my setting in the SMF Bridge is set to unwrapped mode.
So it seems that the setting "wrapped" and "unwrapped" modes are the same. How can I get this to work properly, i.e. is this a setting in a file or database thats not getting updated peroperly?
(I highly recommend you upgrade Mambo. 4.5.2 had some security issues that are quite well known already.)
Sorry my mistake... Mambo 4.5.3h
Oh yes and Bridge version 1.1.3 (I think....) ::)