problems on Next Track Info

[rayx000]

i an no sure about where to post this problem
so i post here

when i am working rockbox on my ipod nano
sometime Next Track Info data on the cabbiev2 theme
will appear wrong song about next track

ex:
real   song a        Next Track  song b

in cabbiev2 theme   song a        Next Track Info      song c
or it will appear prev song i have listened or blank

i really don't know why it happened?
something wrong in the database?
or the code in the id3?(i use big5)

sorry for my poor english
i am a rockbox user from taiwan