升级了内核之后，发现Acrobat Reader启动不了了，于是Google了一下，发现了解决办法：
the original text:
After upgrade to gtk 2.10.1, run acroread just get infinite loop of "expr: Syntax error".with few hours work, I found a workaround:
1. open "acroread" script ,maybe in /usr/bin/,or any other path you put it;
2. find this row:
echo $mfile| sed 's/libgtk-x11-\([0-9]*\).0.so.0.\([0-9]\)00.\([0-9]*\)\|\(.*\)/\1\2\3/g'
3. replace with:
echo $mfile| sed 's/libgtk-x11-\([0-9]*\).0.so.0.\([0-9]*\)00.\([0-9]*\)\|\(.*\)/\1\2\3/g'
