i use intel mac (mac mini and mbp) and i use yahoo messenger (ver 2.5.3) and msn messenger (ver 5.1.1) and experienced that yahoo messenger sometimes crashed. This is what in the console: 2006-05-29 19:06:13.138 DashboardClient IP Change 2006-05-29 19:06:13.398 DashboardClient IP Change May 29 19:27:40 robby-surya-winardhis-computer crashdump: Yahoo! Messenger crashed I dont know why there is IP Change in there, i use cable connection with Linksys router and dlink switch, and i think my local ip is still the same. So o dont know what does that IP Change mean. But maybe that IP Change is causing the YM to crashed for whatever reason. Also, MSN messenger sometimes just get disconnected from the service that i need to reconnect. Nothing happen with my internet connection for sure. And this happen not in the same time when the YM is crashing.. just sometimes. Not quite often though.. Anyone experienced this?