Ok i have found a bug in the VSHMENU, he give speed rushes and than we can't make ours settings not sou good, her the conditions to see the bug:
-make the XMB clock 100MHZ or less
-switch the mune in XMB sometimes that you can see that the clockspeed is activated (the xmb slow down a little), or wait a little that the clockseed is sur enable.
-open the the vhsmenu and you will see the problem (it's a lot more faster than befor)
A second Bug is that you can disable the sleep-mode with the clockspeed int the vshmenu, her the conditions:
-set the clockspeed in the vshmenu 266MHZ or higher
-exit vshmenu and wait, that the new clockspeed is activated
-set the clockspeed in the vshmenu 222MHZ or lower
-exit vshmenu and wait, that the new clockspeed is activated
Now you can do what you would but the sleep-mode is dead!!
Thanks Team M33!!