>> vrotival_at_vrotival-laptop:~/Work/workbench$ ompi_info --all
>> ompi_info: Symbol `mca_allocator_base_components' has different size in
>> shared object, consider re-linking
> Usually, this "has different size" means that libraries have changed
> since you've compiled your program.
>> updates in Ubuntu (although I do not want to incriminate it at first)
> Perhaps you got the Ubuntu Open MPI package. You should make sure that
> - ompi_info shows all the right paths
> - no openmpi-* package is installed
> If in doubt, rip out every installed "Open MPI" and recompile. (just to
> make sure you don't have a mix of different versions)
I'd also suggest having a close look at your synaptic logs to see what has
actually been upgraded.