Libreoffice Impress and Ati-drivers

[yellowhat]

Hi all,
I am using libreoffice-3.6.2.2 impress to create a presentation.
I have a problem when I change slide with 3d effect (revolving cards): when I press right arrow it change to next slide but immedialy shows the previous and then to next, that's very fast but is quite annoying.
The problem is present on my laptop (Ati HD5850 with ati-drivers) but doesn't happen on my workstation (Ati 6870 with open driver).
Any ideas?

Thanks
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Gentoo Linux ~x86, Kernel 3.6.2, Enermax Revolutions85+ 850W, AMD Athlon 64 X2 5000+ BE, Corsair XMS2 PC6400 3GB, ASUS M2R32, Sapphire HD6870, Creative X-Fi Platinum, WD Raptor 150GB, WD 2.5 320GB, Asus DRW-24B1ST