odd problem with VIF Difference mode.

[emoon]

Hi,

I got a quite odd problem with the vif difference mode.

Say that i have data that looks like this

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0x02020202 0x02020202 0x02020202 0x02020202 

it ends up like this :

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0x00000002 0x00000002 0x00000002 0x00000002
0x00000004 0x00000004 0x00000004 0x00000004
0x00000006 0x00000006 0x00000006 0x00000006

which just like it should be, but if i first add a bunch of

0x02020202 and then add a bunch of 0xffffffff
(ie each value sould be decresed by one) everthing fucks up
all data gets :

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0x000000f8 0x000000f8 0x000000f8 0x00000080

(even the data before the 0xffffffff)

if i try something like 0xffff02ff it works fine, but 0xffffffff seems like a magic
number.

Anyone got any ideas?

.emoon