Here in Poland one person wrote on the forum that he returned the phone to the operator with this ghost call issue, and they gave him the possibility to exchange it to the new LG Prada. He accepted it, and wrote that prada is blazing fast. Much faster than sgs2 or phones on custom roms.
Lg prada 3.0 is omap 4430 1 GHz dual core, with 1 Gb of ram. The guy wrote that soft is very optimized, and very responsive. Dunno, for me that phone also was not interesting, but even you ported the prada ROM and it was very responsive. So maybe crappy lg is starting to compete with Samsung starting from now. Unfortunately we have less luck with this lg 'ghost call phone'
This is very encouraging, and they said v20g have completely solve the problem of ghost call. Therefore i highly recommend all of you to install this v20g as fast as possible for testing! !! if anyone still have ghost call, plx say dont feel lazy to post on here!!! your experience always have good value for us to find out a ghost call free version