Indeed. Something I wrote at work:
[One of our major projects] uses LWP::Parallel::UserAgent.
LWP::Parallel::UserAgent doesn't doesn't work with
libwww-perl-5.819 (Oct 19, 2008) and newer.
LWP::Parallel::UserAgent appears to work with libwww-perl
versions up libwww-perl-5.814 (Jul 24, 2008), but the
installer warns that it only has been tested with
libwww-perl-5.760 (older than Jun 15, 2004).
Considering LWP::Parallel::UserAgent hasn't been modified
since 2003, we should be wary of our continued ability to
use this module.
The fix is not obvious.
Turns out we were already moving away from it. I don't know to what.