I have a Gigabyte GA-EP35-DS4 intel based LGA775 motherboard (latest f2 bios) with a new SATA Pioneer DVR-215BK (firmware 1.18 ) DVD writer attached to the southbridge ICH9R SATA controller in AHCI mode. This is loaded with a fresh build of Vista x86 and SP1 RTM. ATI 8.2 drivers AnyDVD version 126.96.36.199 With AnyDVD disabled autoplay works quickly and every time. With AnyDVD enabled autoplay only works occasionally and sometimes will take several minutes to kick off Media Center. The first disk you put in after a reboot is good but on disk swap it sometimes works fine, sometimes takes ages and sometimes doesn't autoplay at all. As soon as I right click the DVD drive in my computer the autoplay kicks in immediately. DVD drive is set to region 2. I am using R2 PAL original DVDs. I have also tried connecting the DVD drive to the gigabyte sata controller in IDE mode and autoplay is still not working correctly. All the AnyDVD settings are at their default values but I have tried ticking and unticking the PC-Friendly (Autorun on Video DVD) option but it doesn't seem to have any effect either way. All other AnyDVD functions are working fine including the baloon tip that shows the disk is being scanned. Diagnostic info zip file attached. Any ideas? ***** UPDATE ***** I would obviously like this function to work as advertised but I think I have found a work around. I have created a command file that waits 5 seconds and then opens the e: drive (my dvd). I have set Anydvd to run this when any disk is inserted and it seems to work! Strangely if I remove the wait I get a windows error saying the the disk is not accessible. I guess this could be related to the issue: ie when windows gets the autoplay request the drive is still being accessed by anydvd and the first autoplay attempt fails, it subsequently runs when you refresh the drive or wait a very long time. ***** UPDATE ****** I have tried this again with an older NEC DVD writer and autoplay works perfectly with anydvd. Looks like its a compatibility problem with pioneer drives. Anydvd support has recommended that I use LG or Plextor units.