We may be migrating a server and the client is keen to use SQL express on the same box as he runs an intranet site and has been told it needs to be on SQL Express.
This article
BlackBerry Search Results states that it will work with 4.1 but MDS services are not supported.
The client doesnt do anything fancy with MDS (just web browsing on the handsets) has anyone done this using SQL Express and found web browsing via MDS doesnt work or is it ok?