[U2Lynne]

Yeah, major problem. The vob files should be *exactly* the same if the DVD is copied correctly. (This is why we want the checksums in the first post of the thread - people can immediately see if their copy was done correctly if they received it in a trade.) Also, all bup files should be exactly the same as the corresponding ifo file of the same name (bup is simply a backup of the ifo, an exact copy) and you can see that even that is not so with the second set of ifo/bup files.

The same:
0c95ed4709bda1bcf17b82f6267700a3 *VIDEO_TS.BUP
0c95ed4709bda1bcf17b82f6267700a3 *VIDEO_TS.IFO
df9e02bc21c5e960e13086d2db699f5c *VTS_01_0.IFO
9594f596fecdf7c8968abe0a5a80b3a2 *VTS_01_0.VOB
0c2fe78e5b3ac64032b903969085416a *VTS_01_1.VOB

Not the same:
d41d8cd98f00b204e9800998ecf8427e *VTS_01_0.BUP
133fb80f8383a0ba2129fc9aef0ee6f4 *VTS_01_2.VOB
d41d8cd98f00b204e9800998ecf8427e *VTS_01_3.VOB
d41d8cd98f00b204e9800998ecf8427e *VTS_01_4.VOB
d41d8cd98f00b204e9800998ecf8427e *VTS_01_5.VOB