Reverse Engineering C++ code is always a bit of a pain because it is so unobvious which language constructs generate what assembly-level code. Contrary to what a C compiler does a C++ compiler has to jump through all sorts of odd hoops in order to make the "OO" part work.

After posting a question about this to www.openrce.org, I got a few replies with some VERY useful links which I'd like to share here:
(thanks to Erlend & Igorsk for the links ! :)

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