Often, disconnecting a terminal from a Sun server will cause the server to interpret the RS232 voltage change as a BREAK sequence, causing the server to go to the “OK” prompt. This bug is reported to be fixed with Solaris 8 but for Solaris 2.6 and 7 some patches must be applied (105924 and 107589). For servers running versions of Solaris older than 2.6 there are no patches. However, the following can be tried:

 1. kbd -a disable - now disconnect the terminal
 2. kbd -a enable - once the terminal is reconnected

It should be noted that this disables the stop-A key sequence from sending a BREAK

If you want to make this a permanent change, edit /etc/default/kbd adding the line KEYBOARD_ABORT=disable .