"gdb console" of ddd is broken

[Tseng, Ling-hua]

My OS: FreeBSD 5.2-current ~ FreeBSD 5.3-BETA3
Desktop: KDE 3.2.3 ~ KDE 3.3

The ddd sent out the null string automatically while I input any 2 characters in the gdb console (without input "enter").
Although I input 1 character and then input "enter", it also sent null string.