Version: 2.9.4 (using KDE 4.2.2) OS: Linux Installed from: Ubuntu Packages when i choose new height, it say to me: "The application Yakuake (yakuake) crashed and caused the signal 11 (SIGSEGV)."
This is caused by Qt 4.5, and a workaround has been released with Yakuake 2.9.5 yesterday.
(Well - or today, depending on your time zone. In any case, update to 2.9.5. :-)
*** This bug has been marked as a duplicate of bug 189332 ***