Data exports are now supported in Symbian^3 and onwards, which means that the problem that was found (where QtCore and QtSql were exporting data, accesses to which were not being fixed up correctly by the loader when the DLLs were marked as paged) should no longer occur.

Paging QtCore and QtSql might result in improved load time performance (less of each DLL might be loaded), and more free RAM (same reason). However, in low RAM situations we might see performance degrade as pages have to be loaded rather than all being in RAM - however this is already the case for all other Qt modules, so it shouldn't make things any worse.