There are plenty of alternatives (e.g. XPDF and KPDF on Linux), which behave better than acroread.
I have tried all of them, and I have to say that they are not as capable as acrobat reader.
MikTeX has the pdfopen and pdfclose scripts which work around that exact problem. They also have been ported to Linux AFAIK.. People who insist on acroread should use this.
These scripts are not the default pdf viewer under windows and can not be picked up by lyx automatically. Bo
