Stephan Boettcher writes:
Please find in ftp.tex.ac.uk:/incoming/lineno.tar.gz a new version v3.09 of lineno.sty, to replace in macros/latex/contrib/supported/lineno.
This update fixes a bug in the nameref.sty detection test, which was gobbling a token from the AtBeginDocument hook. All users should consider to update to this version.
that was quick -- or have you been aware of the bug longer than i have?
anyway, i've installed the files as requested -- thanks for the upload
Robin Fairbairns
For the CTAN team