Newbuntu, old problem

A clean install of Ubuntu 9.04 on my old PC-under-the-desk led to a problem with the Firefox HTML validation tool HTML Validator by Marc Gueury. Luckily no-one at ZDNet Towers has managed to spring clean my old ramblings, so I managed to find reference to this problem (simply sudo apt-get install libstdc++5).

What makes me chuckle about this technology is that I profess to not knowing what libstdc++5 actually is, more than a magical incantation based on trust. Sure, it's some sort of library of code that is referenced by the HTML Validator extension, something to do with the C++ programming language. But what that actually means I don't really know. Like most users, I have trusted sources and muddle on with what I'm doing.