I m not having this problem.Download the debug tools from Microsoft's site and open the memory dump to find out what is causing the problem.I hope u r using the latest version of gtalk.There might be a problem with ur ram.Check it ur ram modules r of similar brand..
well its the latest version and how can just 1 software crash coz of my ram or sound drivers when everything from video editting, to games to sound editting is wrking fine