After this operation, 582 kB of additional disk space will be used. Do you want to continue [Y/n]? y FATAL -> Failed to fork. debconf: apt-extracttemplates failed: Bad file descriptor (Reading database ... 31437 files and directories currently installed.) Unpacking x11-common (from .../x11-common_1%3a7.5+8+squeeze1_all.deb) ... Use of uninitialized value in pattern match (m//) at /usr/share/perl5/Debconf/FrontEnd/ScreenSize.pm line 33. Use of uninitialized value in pattern match (m//) at /usr/share/perl5/Debconf/FrontEnd/ScreenSize.pm line 48. open2: fork failed: Cannot allocate memory at /usr/share/perl5/Debconf/ConfModule.pm line 59 dpkg: error processing /var/cache/apt/archives/x11-common_1%3a7.5+8+squeeze1_all.deb (--unpack): subprocess new pre-installation script returned error exit status 12 configured to not write apport reports Errors were encountered while processing: /var/cache/apt/archives/x11-common_1%3a7.5+8+squeeze1_all.deb E: Sub-process /usr/bin/dpkg returned an error code (1)