Bug in Parental Control ??

Hi Microsoft.
I found some strange side effects of Parental Control.
I am using Vista ultimate 64-bit version. So long all worked like charm.(
exept some drivers problem) but on one night i read about parental control
and turned it on for my wife, kid and my regular account.
Next day - i get call from my wife - she cant use SHIFT and CTRL keys on
Windows 2003 terminal session(company server). And mouse is accting weird.
First i think that there was problem with stiky keys, but messing with
accesbility functions does not resolve anything.
Today i recalled my tasks between working and not-working condition and
remembered this PC stuff.
And - confirmed - IF i turn OFF Parental control for this user, he can use
SHIFT, CTRL and ALT keys on RDP session. Also affected mouse operations
(unable select text and resize windows) went back to normal.
I cant find any KB about this "feature" but found (via Google) some users
that have same problem ( their resolution was give to user admin rights :P
)). So i think it IS problem...