Comment 2 for bug 217110

Yes, this is hardy. Since upgrading to hardy final I tried it again with other DVDs and they're also giving errors, like:

root@desktop:~# dvdbackup -o xx -F
libdvdread: Invalid IFO for VMGM (VIDEO_TS.IFO).
libdvdread: Invalid IFO for VMGM (VIDEO_TS.IFO).
Error reading MENU VOB
Mirror of main feature file which is title set 1 failed
Mirror of main feature film of DVD failed

root@desktop:~# lsdvd

*** libdvdread: CHECK_VALUE failed in ifo_read.c:1678 ***
*** for info_length % sizeof(uint32_t) == 0 ***

another dvd:

*** libdvdread: CHECK_VALUE failed in ifo_read.c:1543 ***
*** for info_length % sizeof(cell_adr_t) == 0 ***

*** libdvdread: CHECK_VALUE failed in ifo_read.c:1678 ***
*** for info_length % sizeof(uint32_t) == 0 ***

*** libdvdread: CHECK_VALUE failed in ifo_read.c:1543 ***
*** for info_length % sizeof(cell_adr_t) == 0 ***

libdvdread: Invalid title IFO (VTS_01_0.IFO).
libdvdread: Invalid IFO for title 1 (VTS_01_0.BUP).
Can't open ifo 1!