Hi Neels,
Thank you for your email.
There is only one instance of libdbsqlite3.so - and it's a fresh build.
root@debian:~/openbsc/openbsc/src/osmo-nitb# locate libdbdsqlite3.so
/usr/lib/i386-linux-gnu/dbd/libdbdsqlite3.so
root@debian:~/openbsc/openbsc/src/osmo-nitb# file /usr/lib/i386-linux-gnu/dbd/libdbdsqlite3.so
/usr/lib/i386-linux-gnu/dbd/libdbdsqlite3.so: ELF 32-bit LSB shared object, Intel 80386, version 1 (SYSV), dynamically linked, BuildID[sha1]=fd673630ac267d5ef3f2d82665ffc5d0b80d24fc, stripped
root@debian:~/openbsc/openbsc/src/osmo-nitb# ls -ls /usr/lib/i386-linux-gnu/dbd/libdbdsqlite3.so
36 -rw-r--r-- 1 root root 35696 Apr 4 2014 /usr/lib/i386-linux-gnu/dbd/libdbdsqlite3.so