I think try copying this graph in impress. I haven't been able to reproduce the problem again... When I paste the graph into impress now, it simply doesn't show up.
Untitled 1.ods (application/Calc), 12.91 KB, created by bananaphone103 on 2012-08-14 04:15:18 UTC
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Creator: bananaphone103
Created: 2012-08-14 04:15:18 UTC
Size: 12.91 KB

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