Reliability of guide data content?

Hi, From about a week ago, I starting using oztivo.net xmltv data for my Topfield PVR and it seems to be working well. However, I auto-recorded last nights "Crouching Tiger, Hidden Dragon" movie on SBS-Qld but the duration was given incorrectly as 75 mins so consequently I lost much of the ending. Looking at the community based guide data on the oztivo.net site, I see that the duration was correctly indicated for SBS-Vic and SBS-Tas as 125 min, but incorrect for all other SBS regions. The following program "A Chinese Odyssey" was indicated as starting too early.

Was I just unlucky and this was a rare error in the guide data? Or are such errors inevitable in the community data and occur semi-frequently?

Rare occurrence but inevitable now and then given human error. You can help however by contributing to the guide data whenever possible as volunteers to ensure the data is valid and correct is always welcome.