Rotation Problem

I'm currently having a problem with my rotation script when i link it to an object.
The object containing the script seems to go haywire once i link it to any other object, the script is the below
integer i = 0;
rotation rot_xyzq;
default
{
state_entry()
{
llSetTimerEvent(1.0);
}

timer()
{
if(i == 0)
{
vector xyz_angles = <0,-40,0>;
vector angles_in_radians = xyz_angles*DEG_TO_RAD;
rot_xyzq = llEuler2Rot(angles_in_radians);

llSetRot(llGetRot()*rot_xyzq);

i++;
}
else if(i == 1)
{
vector xyz_angles = <0,40,0>;
vector angles_in_radians = xyz_angles*DEG_TO_RAD;
rot_xyzq = llEuler2Rot(angles_in_radians);

llSetRot(llGetRot()*rot_xyzq);

i--;
}

}
}

any suggestions?

Probably SVC-93

You seem to be suggesting that the prim with the script is not the parent prim of the linkset, in which case you may want to use llSetLocalRot rather than llSetRot.