Please provide the output of df -h You should uninstall openarena. devel applications may not be stable / optimized enough for regular use. For instance, I have just tested cutetube from devel but at first video playing the device almost crashed with 100% CPU and swapping a lot.
~ $ df -h Filesystem Size Used Available Use% Mounted on rootfs 227.9M 152.4M 71.3M 68% / ubi0:rootfs 227.9M 152.4M 71.3M 68% / tmpfs 1.0M 76.0k 948.0k 7% /tmp tmpfs 256.0k 76.0k 180.0k 30% /var/run none 10.0M 72.0k 9.9M 1% /dev tmpfs 64.0M 4.0k 64.0M 0% /dev/shm /dev/mmcblk0p2 2.0G 1.6G 297.7M 84% /home /home/opt 2.0G 1.6G 297.7M 84% /opt /opt/pymaemo/usr/lib/python2.5 2.0G 1.6G 297.7M 84% /usr/lib/python2.5 /opt/pymaemo/usr/share/pyshared 2.0G 1.6G 297.7M 84% /usr/share/pyshared /opt/pymaemo/usr/lib/pyshared 2.0G 1.6G 297.7M 84% /usr/lib/pyshared /opt/pymaemo/usr/share/python-support 2.0G 1.6G 297.7M 84% /usr/share/python-support /opt/pymaemo/usr/lib/python-support 2.0G 1.6G 297.7M 84% /usr/lib/python-support /dev/mmcblk0p1 27.0G 25.4G 1.6G 94% /home/user/MyDocs ~ $