I've just compiled a .tex file from the shell using the latex command, and it looks as if the entire text of the file has been passed through some strange substitution cipher. Part of the .dvi output is below:

As you can see, the math-mode is basically fine, but the text has been garbled. What am I doing wrong?
Update: The following code produces the figure above when compiled with latex.
\documentclass{article}
\usepackage[latin1]{inputenc}
\usepackage[T1]{fontenc}
\usepackage{times}
\usepackage{url}
\usepackage{amsmath}
\usepackage{alltt}
\usepackage[final]{graphicx}
\begin{document}
\subsubsection{Tandem mismatches effect}
The tandem mismatches (two adjacent mismatches) are taken into account but
the two first and positions cannot
be mismatched. Moreover the thermodynamic parameters are still not
available for every possible cases.
In such a case, the program, unable to compute any relevant result, will
quit with a warning.
For DNA duplexes, this program computes the hybridisation enthalpy and entropy from the elementary
parameters of each Crick's pair containing the mismatch(es).
\begin{multline*}
\Delta{}h_\mathrm{tandem-mismatch} =
\delta{}h_\mathrm{Crick's-pair-containing-tandem-mismatch} \\ +
\sum \delta{}h_\mathrm{Crick's-pair-containing-single-mismatch}
\end{multline*}
\end{document}
Update: Loading the times package causes the problem. The document
\documentclass{article}
\usepackage{times}
\begin{document}
hello
\end{document}
produces

Leaving out the \usepackage{times} line gives the output you would expect.
dvi? – daleif Aug 12 '13 at 12:24dvitype foo.dvi | fgrep '['and see whether the original text is intact. – lhf Aug 12 '13 at 12:38timesis outdated, please use instead packagemathptmx. (see package times on ctan) – Mensch Aug 12 '13 at 12:42mathptmxdoesn't solve the problem, though. – John Gowers Aug 12 '13 at 12:45dvitype. I would have thought it would be included with the TeX distribution. – John Gowers Aug 12 '13 at 12:48email bug reports to pdftex@tug.org, so I think it's TUG TL. – John Gowers Aug 12 '13 at 12:52.pdf,.psand.dvifiles in case people want to open the file in those formats. – John Gowers Aug 12 '13 at 12:53Evincein my earlier attempt.My Evincewill not display thedviat all. Have you triedxdviinstead, that works. – daleif Aug 12 '13 at 13:03.dviand.psno-one publishes that online anymore. – daleif Aug 12 '13 at 13:04xdviworks fine.... – John Gowers Aug 12 '13 at 13:08