Title Bar DISAPPEARS off top of all windows

[Ralph.Bremer]

Hello,
i had the disappearing title with knoppix 6.7.1 nearly every time ....
pressing ctrl-alt-f1 followed by init 1 and thereafter init 5 repaired the desktop but was not very convenient ...
because the previous version witout 3d did not have the problem i disabled 3d by using no3d ...
it worked perfectly ... ( and closing a window got much quicker without the animation .. )

now with 7.0.4 the title never got lost ...
( eventually because i disabled 3d short time after usb-install )
however one time i got a black screen wit a mouse pointer which changed its apperence depending on the unvisible things behind it ...
ctl-alt-f1 -> init 1 -> init 5
solved it only partially ... desktop reappeared but two moving mousepointers ...
i did not try what would happen when clicking with two pointers somewehere
i used
ctrl-alt-f1 -> halt
to securely stop the system ...
until now the bug didn't hit again ...
Ralph