All applications close after being open for 1 minute.
Recently, all applications I open on my Mac close after being open for 1 minute. Safari and Microsoft word do not stay open for longer than 30 seconds. Prior to this, my computer would freeze and eventually applications would close. I'm not sure why this is happening or how to fix it. Does anyone know what could of happen for everything to close after opening it? Any help would be great, thanks!
MacBook Pro, Mac OS X (10.5.8)