Computer Crashes on Mail Minimize

Question

I have a new twist on the mail crashes.
I seem to have an intermittent problem. When I click the yellow button to minimize the Mail screen (send to Doc), the minimize animation freezes, mouse freezes and system completely crashes (remaining on frozen minimize screen). The only way out is to power off. To get the computer to work again, I have to disconnect power for 30 seconds and restart. Then all is well - until the next random occurrence.
I have not changed anything other than keeping up with software updates. I should add, also, that I never had Mail crashes prior to this problem.
I appreciate any thoughts.

Answer 1

Got it. The information below covers a few crashes:
3/29/08 7:14:25 AM com.apple.launchctl.System[2] launchctl: Please convert the following to launchd: /etc/mach_init.d/dashboardadvisoryd.plist
3/29/08 7:14:25 AM com.apple.launchd[1] (org.cups.cupsd) Unknown key: SHAuthorizationRight
3/29/08 7:14:25 AM com.apple.launchd[1] (org.ntp.ntpd) Unknown key: SHAuthorizationRight
3/29/08 7:14:37 AM com.apple.launchd[1] (com.apple.UserEventAgent-LoginWindow[66]) Exited: Terminated
3/29/08 7:14:38 AM com.apple.SystemStarter[15] Starting HP IO Monitor
3/29/08 7:14:38 AM com.apple.SystemStarter[15] Starting HP Trap Monitor
3/29/08 7:22:24 AM Software Update[141] arguments=(null)
3/29/08 7:49:47 AM com.apple.loginwindow[22] Shutdown NOW!
3/29/08 7:49:47 AM com.apple.loginwindow[22] System shutdown time has arrived
3/29/08 7:49:47 AM com.apple.SystemStarter[15] Stopping HP Trap Monitor
3/29/08 7:49:47 AM com.apple.SystemStarter[15] Stopping HP IO Monitor
3/29/08 7:50:25 AM com.apple.launchctl.System[2] launchctl: Please convert the following to launchd: /etc/mach_init.d/dashboardadvisoryd.plist
3/29/08 7:50:25 AM com.apple.launchd[1] (org.cups.cupsd) Unknown key: SHAuthorizationRight
3/29/08 7:50:25 AM com.apple.launchd[1] (org.ntp.ntpd) Unknown key: SHAuthorizationRight
3/29/08 7:50:35 AM com.apple.launchd[1] (com.apple.UserEventAgent-LoginWindow[70]) Exited: Terminated
3/29/08 7:50:43 AM com.apple.SystemStarter[15] Starting HP IO Monitor
3/29/08 7:50:43 AM com.apple.SystemStarter[15] Starting HP Trap Monitor
3/29/08 7:50:59 AM com.apple.loginwindow[22] Shutdown NOW!
3/29/08 7:50:59 AM com.apple.loginwindow[22] System shutdown time has arrived
3/29/08 7:50:59 AM com.apple.SystemStarter[15] Stopping HP Trap Monitor
3/29/08 7:50:59 AM com.apple.SystemStarter[15] Stopping HP IO Monitor
3/29/08 7:51:30 AM com.apple.launchctl.System[2] launchctl: Please convert the following to launchd: /etc/mach_init.d/dashboardadvisoryd.plist
3/29/08 7:51:30 AM com.apple.launchd[1] (org.cups.cupsd) Unknown key: SHAuthorizationRight
3/29/08 7:51:30 AM com.apple.launchd[1] (org.ntp.ntpd) Unknown key: SHAuthorizationRight
3/29/08 7:51:39 AM com.apple.launchd[1] (com.apple.UserEventAgent-LoginWindow[70]) Exited: Terminated
3/29/08 7:51:44 AM com.apple.SystemStarter[15] Starting HP IO Monitor
3/29/08 7:51:44 AM com.apple.SystemStarter[15] Starting HP Trap Monitor
3/29/08 8:01:25 AM com.apple.loginwindow[22] Shutdown NOW!
3/29/08 8:01:25 AM com.apple.loginwindow[22] System shutdown time has arrived
I hope this helps because it means nothing to me! I noticed there is nothing about Mail in the above, however, so maybe this belongs in another thread?
Thanks for your patience and help.