My understanding is that the GoG/Steam version uses a recompiled 1.3beta executable that incorporates GoG Galaxy support. Others here can provide more detail about that. It most definitely does not use the retail 1.2 version.
I don't think that there will be many performance issues with hosting on linux even if that is an old computer. SWBF came out in 2004, so unless it is a really really old computer, it should be able to host just fine (use the dedicated server software).
(Also, are you running LAN mode or internet mode?)
I don't think that there will be many performance issues with hosting on linux even if that is an old computer. SWBF came out in 2004, so unless it is a really really old computer, it should be able to host just fine (use the dedicated server software).
(Also, are you running LAN mode or internet mode?)