Need a little help with llReleaseControls

Ok, I have a bug with one of my scripts, the controls never releases. If I click on the release keys button, it disappears, and the object is detacted. But if I detact the object the release keys button never goes away until I log off. Clicking on the release keys button does nothing. Here is a few snipplets of my code, maybe someone out there can help me.

Thank you in advance.

takeControls(integer passOn)
{

llTakeControls(CONTROL_DOWN,TRUE,passOn);
llTakeControls(CONTROL_UP,TRUE,passOn);
llTakeControls(CONTROL_FWD | CONTROL_BACK,TRUE,passOn);
llTakeControls(CONTROL_LEFT | CONTROL_RIGHT,TRUE,passOn);


}

state default
{
run_time_permissions(integer perm)
{
if (perm & PERMISSION_TAKE_CONTROLS)
{
takeControls(TRUE);
}
}

attach(key id)
{
integer perm = llGetPermissions();

if (id != NULL_KEY)
{
if ((perm & PERMISSION_TAKE_CONTROLS) == FALSE)
{
llRequestPermissions(llGetOwner(),PERMISSION_TAKE_CONTROLS);

}
my_id = id;
} else {
llReleaseControls();
llRequestPermissions(llGetOwner(),0);
}
}
}

I'm sorry for not looking through your script carefully, but I suspect your custom function works correctly. Are four llTakeControls available? I guess that the control event handler will be invoked as soon as the first llTakeControls has been called.

It sounds suspiciously like you might have another attachment that's also taking controls.

I have experienced this in several vehicles.

It always occur when I fly into a restricted area with the vehicle, then I am thrown out of the vehicle, then This problem occurs till I restart SL.

-a newbie