apt-get install unetbootin
Reading package lists... Done
Building dependency tree
Reading state information... Done
unetbootin is already the newest version.
0 upgraded, 0 newly installed, 0 to remove and 19 not upgraded.
1 not fully installed or removed.
After this operation, 0 B of additional disk space will be used.
Do you want to continue [Y/n]? Y
Setting up extlinux (2:4.05+dfsg-2) ...
P: Checking for EXTLINUX directory... found.
P: Writing config for /boot/vmlinuz-3.8.0-27-generic...
P: Writing config for /boot/vmlinuz-3.8.0-26-generic...
P: Writing config for /boot/vmlinuz-3.5.0-37-generic...
P: Writing config for /boot/vmlinuz-3.5.0-36-generic...
P: Writing config for Windows 7 (loader) on /dev/sdb1...
P: Installing debian theme...cp: cannot stat `/usr/share/syslinux/themes/debian-squeeze/extlinux/memtest.bin': No such file or directory
dpkg: error processing extlinux (--configure):
 subprocess installed post-installation script returned error exit status 1
Errors were encountered while processing:
 extlinux
localepurge: checking for existence of /var/cache/localepurge...
localepurge: checking for existence of /var/cache/localepurge/localelist...
localepurge: checking system for new locale ...
localepurge: processing locale files ...
localepurge: Disk space freed in /usr/share/locale: 0 KiB
localepurge: processing man pages ...
localepurge: Disk space freed in /usr/share/man: 0 KiB
localepurge: processing Gnome files ...
localepurge: Disk space freed in /usr/share/gnome/help: 0 KiB
localepurge: processing Omf files ...
localepurge: Disk space freed in /usr/share/omf: 0 KiB
localepurge: processing KDE files ...
localepurge: Disk space freed in /usr/share/doc/kde/HTML: 0 KiB

Total disk space freed by localepurge: 0 KiB

E: Sub-process /usr/bin/dpkg returned an error code (1)