Version:            (using KDE 4.3.2)
Compiler:          Sun Studio 12 U1 
OS:                Solaris
Installed from:    Compiled From Sources

with KDE 4.3.2 on opensolaris/x86, nepomuk-rcgen fails to start with:
$ /opt/kde4/bin/nepomuk-rcgen 
Segmentation Fault (core dumped)

this prevents building pim
I am not sure if nepomuk-rcgen was or was not crashing in 4.3.1. 

backtrace:
=>[1] libQtCore.so.4.5.2:QMutex::unlock(0x80ae701, 0x80ae710, 0x80af364, 0xcfd9a473), at 0xcf976d4f 
  [2] libsoprano.so.4.2.0:QMutexLocker::~QMutexLocker(0x8047468, 0x0), at 0xcfd9a49a 
  [3] libQtCore.so.4.5.2:QAbstractFileEngineHandler::QAbstractFileEngineHandler(0x80ae6f0, 0x0), at 0xcfa4554d 
  [4] libQtCore.so.4.5.2:QResourceFileEngineHandler::QResourceFileEngineHandler(0x80ae6f0, 0x0), at 0xcfa97ca8 
  [5] libQtCore.so.4.5.2:resource_file_handler(0xcfc22d10, 0xcfa950c9, 0xcf4f3126, 0xcfe67406, 0xcfe7b6dc, 0x804750c), at 0xcfa94fd2 
  [6] libQtCore.so.4.5.2:qt_force_resource_init(0xcfc22d10, 0xcfa95139, 0x8047514, 0xcfa97bd6, 0xcfc22d10, 0xcfa97bb9), at 0xcfa950e6 
  [7] libQtCore.so.4.5.2:__SLIP.INIT_A(0xcfc22d10, 0xcfa97bb9, 0x8047528, 0xcfbfa4e1, 0xcfffc804, 0xcf400c10), at 0xcfa95156 
  [8] libQtCore.so.4.5.2:__STATIC_CONSTRUCTOR(0xcfffc804, 0xcf400c10, 0xcfe20ac0, 0x8047568, 0xcffd23e6, 0xcf400c14), at 0xcfa97bd6 
  [9] libQtCore.so.4.5.2:__cplus_fini_at_exit(0xcf400c14, 0xcfffc334, 0x1), at 0xcfbfa4e1 
  [10] ld.so.1[L]:call_init(0xcf400bf8, 0x1, 0xcff903e0, 0x10), at 0xcffd23e6 
  [11] ld.so.1[L]:setup(0x8047854, 0x804791c, 0x0, 0x8047fda, 0x1000, 0xcffc0961, 0xcffbd000, 0xcffbd000, 0xffffffff, 0x8050034, 0x8047fe0, 0x804784c, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0x0, 0x2, 0x2dc6f, 0xcffdf0f6), at 0xcffd12eb 
  [12] ld.so.1[L]:_setup(0x8047808, 0x3fb28, 0x3, 0x804784c, 0x4, 0x8047854), at 0xcffdf3f8 
  [13] ld.so.1[L]:_rt_boot(0x0, 0x80479a0, 0x80479ad, 0x8047a0b, 0x8047a20, 0x8047acb), at 0xcffc56a4

Soprano is 2.3.0
Qt 4.5.2

KDElibs build log: http://cr.opensolaris.org/~hnhn/kde-logs/20091012/KDElibs.log
soprano build log http://cr.opensolaris.org/~hnhn/kde-logs/20091012/FOSSsoprano.log