Thank you,
this second solution seems to work for me.
Downside of that is it might want to upgrade libc6 while it's at it.
To get around that, add a "deb-src ... testing" line to sources.list,
apt-get update
apt-get -t testing --compile source proj
dpkg -i your_new_proj_package.debI think... it's been a while since I've had to do this.
good luck,
Hamish