There are two possible ways to avoid these update situations:
A. MAINTAIN VERSION 2.1-3:
in order to keep this version you need to login as
root an run the following commands:
# /opt/BitDefender/bin/bdsafe registry setkey \
/BDUX/LiveDaemon/UpdateLocations/linux-gcc3x-i586-mail-213 /opt/BitDefender/var
# /opt/BitDefender/bin/bdsafe registry setkey \
/BDUX/LiveDaemon/UpdateLocations/linux-gcc3x-i586-common-213 /opt/BitDefender/var
B. UPGRADE TO VERSION 2.1-4: the new version is available for download
here.