Very strange GI/reflection problem

[PIXELBOX_SRO]

Hello guys,
i have a scene where and object seems to be interacting with a ground plane in a way as it was self illuminated.
i have checked the passes and it really is a GI. But how come??? There should be a shadow underneath!
Any clues please?
Thanks

Here is the sample:

[super gnu]

what is the shadow bias on your lights set to? turn it down to 0.0001 or something very very small if you didnt already..

[svetlozar.draganov]

Yeap - there is some light-leaking between the two objects.
Are you using Light Cache for the GI ? If yes then make sure that Retrace Threshold is on:
http://help.chaosgroup.com/vray/help...he.htm#retrace

If that doesn't help - please send us your scene ( or part of it ) for investigation.