WAIT A SECOND!!!!!!!!!!!!!!
If your'e going to install the patches (& jsut the patch installers not the full installers), your'e going to have to install them in order (1.2.1>1.2.2>1.2.3). Install 1.2.2 before you isntall 1.2.3, as 1.2.3 does not change the client dll, it's just a few map fixes & add a new map (esf_arrival).