Can't access frontview anymore on ReadyNas Ultra 6

I have a ReadyNas Ultra 6 where I can't access frontview anymore after a firmware upgrade. Everything else is working fine, I have SSH access, I can access my shares and services are running fine buy I can't access the admin page. The NAS is detected by Raidar, but when I click on setup the browser tells me the webpage is unavailable.

It looks like apache is not starting, I get following error:

# /etc/init.d/apache2 start
Starting web server: apache2/usr/sbin/apache2: /lib/libuuid.so.1: no version information available (required by /usr/lib/libapr-1.so.0)
/usr/sbin/apache2: /lib/libc.so.6: version `GLIBC_2.10' not found (required by /usr/lib/libapr-1.so.0)
/usr/sbin/apache2: /lib/libc.so.6: version `GLIBC_2.9' not found (required by /usr/lib/libapr-1.so.0)
failed!

System partion is not full:

# df -h
Filesystem Size Used Avail Use% Mounted on
/dev/md0 4.0G 1.5G 2.4G 38% /
tmpfs 16K 0 16K 0% /USB
/dev/c/c 3.7T 1.8T 1.9T 50% /c

Looking at this forum, it seems like I'm not the only one with this problem but I can't find a fix.

mdgm-ntgr, please help me with one of your famous PM's :smileyhappy: 

Regards,

René