I've a athlon Xp 3000+, Geforce FX 5200 and the same burner as you and no problem with 188.8.131.52 !!!
Do you burn directly and automatically after the transcoding step or in a seperated time... I mean, for me, I always do :
- rip with DVDdecrypter
- Transcode with clonedVD2 (184.108.40.206) - movie only + menu into HDD
- verify the transcoded files with windvd on HDD
- burn this generated files again with cloneDVD into DVD-R(W)
I've firmware 1.33 for my burner, what's yours ?
Hope this can help...