The following error occurs every time I try to install any package. How to resolve this issue. I have tried it with apt-get as well n even tried to install the packages (written in colored text) manually.

debian:~# aptitude install net-tools
Reading package lists... Done
Building dependency tree... Done
Reading extended state information
Initializing package states... Done
Reading task descriptions... Done
Building tag database... Done
No packages will be installed, upgraded, or removed.
0 packages upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
Need to get 0B of archives. After unpacking 0B will be used.
Writing extended state information... Done
Setting up tetex-bin (3.0-30) ...
Running fmtutil-sys. This may take some time... Error: `pdfetex -ini -jobname=latex -progname=latex -translate-file=cp227.tcx *latex.ini' possibly failed.
Error: `pdfetex -ini -jobname=pdflatex -progname=pdflatex -translate-file=cp227.tcx *pdflatex.ini' possibly failed.
Error: `omega -ini -jobname=lambda -progname=lambda lambda.ini' possibly failed.
Error: `aleph -ini -jobname=lamed -progname=lamed *lambda.ini' possibly failed.

################################################## #############################
fmtutil: Error! Not all formats have been built successfully.
Visit the log files in directory
/var/lib/texmf/web2c
for details.
################################################## #############################
........
.......
Errors were encountered while processing:
tetex-bin
tetex-extra
tk-brief