Look if you have in usr/share/fonts only this folders: (for example) ARABIC, CHINESE, NOKIA and THAI-TTF. If you have here other folders or .ttf just delete it. Same in folder NOKIA, here are only seven files, last NSCNR.TTF, if you have some next, delete it. I had same problem, this helped me
Nokia-N900-42-11:~# ls -la /usr/share/fonts/ drwxr-xr-x 5 root root 1216 Oct 30 12:35 . drwxr-xr-x 122 root root 9272 Mar 11 18:31 .. -rw-r--r-- 1 root root 61236 Mar 19 2006 NcrBI4nh.ttf -rw-r--r-- 1 root root 57436 Mar 19 2006 NcrBR4nh.ttf -rw-r--r-- 1 root root 58588 Mar 19 2006 NcrRI4nh.ttf -rw-r--r-- 1 root root 58592 Mar 19 2006 NcrRR4nh.ttf -rw-r--r-- 1 root root 67936 Mar 19 2006 NtmBI4nh.ttf -rw-r--r-- 1 root root 67120 Mar 19 2006 NtmBR4nh.ttf -rw-r--r-- 1 root root 68032 Mar 19 2006 NtmRI4nh.ttf -rw-r--r-- 1 root root 67384 Mar 19 2006 NtmRR4nh.ttf -rw-r--r-- 1 root root 58036 Mar 19 2006 SwaBI4nh.ttf -rw-r--r-- 1 root root 56856 Mar 19 2006 SwaBR4nh.ttf -rw-r--r-- 1 root root 58628 Mar 19 2006 SwaRI4nh.ttf -rw-r--r-- 1 root root 56964 Mar 19 2006 SwaRR4nh.ttf drwxr-xr-x 2 root root 320 Oct 30 12:35 arabic drwxr-xr-x 2 root root 232 Oct 30 12:31 chinese drwxr-xr-x 2 root root 752 Mar 11 17:23 nokia Nokia-N900-42-11:~# ls -la /usr/share/fonts/nokia/ drwxr-xr-x 2 root root 752 Mar 11 17:23 . drwxr-xr-x 5 root root 1216 Oct 30 12:35 .. -rw-r--r-- 1 root root 5332 Oct 5 12:14 DeviceSymbols-RX34.ttf -rw-r--r-- 1 root root 126320 Oct 5 12:14 Nokia_Sans_Maps.ttf -rw-r--r-- 1 root root 626176 Mar 11 17:23 font.tar -rw-r--r-- 1 root root 5484 Oct 5 12:14 nokiasmiley.ttf -rw-r--r-- 1 root root 44076 Mar 11 18:23 nosnb.ttf -rw-r--r-- 1 root root 44076 Mar 11 18:23 nosnr.ttf -rw-r--r-- 1 root root 44076 Mar 11 18:23 nosns.ttf -rw-r--r-- 1 root root 44076 Mar 11 18:23 nscnr.ttf Nokia-N900-42-11:~#