SRU justification: an unnoticed misbuild of wxwidgets2.8 in natty against multiarch libraries results in classes missing from wxWidgets, resulting in an ABI break.
Risk: since fixing this bug means re-enabling code that was disabled prior to the natty release, it may expose further bugs. However, it's extremely unlikely that this will be worse than having a completely broken library API.
wxWidgets' configure has `wxDisplay` class enabled by default (`--enable-display`). However, the wxWidgets package on Natty it is disabled (`wxUSE_DISPLAY`=0 in `/usr/lib/wx/include/gtk2-unicode-release-2.8/wx/setup.h`).
My investigation showed that it is because wxDisplay depends on `libXinerama`, but the library files are located in a directory (on 64-bit Natty it is `./lib/usr/lib/x86_64-linux-gnu/libXinerama.a`) where wxWidgets configure is not aware of.