UPDATED question. Here is an MWE - finally I could produce one.
\documentclass{article}
\usepackage{geometry}
\usepackage{graphicx}
\usepackage[usenames,dvipsnames,svgnames,table]{xcolor}
\usepackage{fancyhdr}
\usepackage{longtable}
\usepackage{tabu}
\usepackage{booktabs}
\usepackage{multirow}
\usepackage{polyglossia}
\setmainlanguage{magyar}
\usepackage{lipsum}
\newcommand{\globFooter}{
\def\alignFooter##1{\vtop{\null\hbox{##1}}}
\cfoot{%
\begin{tiny}
\begin{tabular}{lll}
\alignFooter{\includegraphics[width=2cm]{rBdytQH.png}}
&
\alignFooter{\begin{tabular}{lll}
Address line 1 Address line 1 & Telephone 1 Telephone 1 & Web 1 Web 1 Web 1 Web 1 \\
Address line 2 & Fax line & skype text\\
Address line 3 & Mobile line & Web 2
\end{tabular}}
\end{tabular}
\end{tiny}
}
}
\geometry{tmargin=1in,bmargin=2.5in,lmargin=0.7in,rmargin=0.7in}
\pagestyle{fancy}
\globFooter
\begin{document}
\lipsum[1-6]
Here is some more text that will position the last rows of the table near the footer: Nulla euismod, dolor vitae faucibus tincidunt, ante sem commodo massa, vitae maximus ante nisi eget magna.
\begin{enumerate}
\item Item 1
\item Item 2
\begin{longtabu} to \linewidth {@{}X[p,l]ccrlrrc@{}} %
\multicolumn{6}{p{12cm}}{First row in the table} \\
\multicolumn{3}{l}{}
& \small 1.0 & egy. 99\,999 & 99\,999 HUF & \\
\multicolumn{6}{p{12cm}}{Second row in the table} \\
\multicolumn{3}{l}{}%
& 1.0 & alk. & 5\,000 & 9\,999 HUF & \\
\end{longtabu}
\end{enumerate}
\bigskip
\bigskip
\end{document}
It does not work without the image. The image is here:
It seems that the problem is related to the longtabu, because the footer overlaps with the longtabu when the bottom of the table is close to the end of the page. Here is the example overlap:



\footskip. How do we know? We don't have the full code :( – Oct 28 '15 at 10:43\cfoot{\rule{0.5\textwidth}{0pt}but I don't understand why! – nagylzs Oct 28 '15 at 12:17,includefoot,footskip=0.1into\geometry{tmargin=1in,bmargin=2.5in,lmargin=0.7in,rmargin=0.7in,includefoot,footskip=0.1in,showframe}.showframeis just for demo. Remove it. – Oct 28 '15 at 12:26! Package xkeyval Error:footskip' undefined in familiesGm'.– nagylzs Oct 28 '15 at 12:37\cfoot...does not (cannot??) adjust the margins automatically. In the case of headers, it will adjust them, although too late to avoid inconsistency. Hence, it issues a warning in that case. But footers are different, I think. – cfr Oct 28 '15 at 12:37includeheadorincludefootetc. change that. See page 3 of geometry's manual. – cfr Oct 28 '15 at 12:47headheightandfootskipare adjusted automatically. But this will result in inconsistent page layout. So it is better we adjust them. – Oct 28 '15 at 14:24