"Crystal Reports 11 Runtime" known problems:

Uninstall will not remove the common files of the framework
(e.g. C:\Program Files (x86)\Common Files\Business Objects\ )
at Crystal Reports 11 Runtime (2005-06-28)
   Crystal Reports 11 Runtime (2005-07-25)
   Crystal Reports 11 Runtime (2006-06-11)

Framework has problems with "Left Join" / Grouping which
may cause reports containing repeated records
and extremely slow generation.
at Crystal Reports 11 Runtime (2005-07-25)
   Crystal Reports 11 Runtime (2006-06-11)