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Thanks gmedina,

That worked like a charm.

So to conclude for people bumping into this problem:
If Turkish Babel is loaded, it activates the "=" symbol. It results in all options like [width=...] rendered as text, although they are commands. Adding
\shorthandoff{=} right after \begin{document ...

Thanks for your fast reply, I'm sorry about my vagueness.

I guess I found out what was the problem, but it is still an issue for me:

An easy example would be:

\listfiles
\documentclass[a4paper,10pt]{article}
\usepackage[turkish]{babel}
\usepackage{graphicx}
\usepackage{float}
\usepackage{xkeyval ...

When I upgraded from tetex to texlive 2009 , which was a mandatory upgrade I guess since I cannot find the previous one in the repositories.

I have a problem which arose with this upgrade.

Though It can render everything I could render beforehand, I am having trouble about one thing. I cannot use ...