==6699== 
==6699== Invalid free() / delete / delete[]
==6699==    at 0x402243F: free (in /usr/lib/valgrind/x86-linux/vgpreload_memcheck.so)
==6699==    by 0x67E6BCA: icalvalue_free (in /usr/lib/libecal-1.2.so.7.0.2)
==6699==    by 0x67DAE7D: icalproperty_free (in /usr/lib/libecal-1.2.so.7.0.2)
==6699==    by 0x67D62E7: icalcomponent_free (in /usr/lib/libecal-1.2.so.7.0.2)
==6699==    by 0x67AEC8B: (within /usr/lib/libecal-1.2.so.7.0.2)
==6699==    by 0x67B6145: (within /usr/lib/libecal-1.2.so.7.0.2)
==6699==    by 0x56C1BFA: g_object_unref (in /usr/lib/libgobject-2.0.so.0.1400.1)
==6699==    by 0x5D336BB: e_cal_glue_free_cal_component (e-cal-glue-comp.c:172)
==6699==    by 0x7168F23: ???
==6699==    by 0x7168DF6: ???
==6699==    by 0x7168D28: ???
==6699==    by 0x80F66B4: (within /usr/bin/mono)
==6699==  Address 0x42CD1D8 is 0 bytes inside a block of size 4 free'd
==6699==    at 0x402243F: free (in /usr/lib/valgrind/x86-linux/vgpreload_memcheck.so)
==6699==    by 0x408ABD0: g_free (in /usr/lib/libglib-2.0.so.0.1400.1)
==6699==    by 0x80A5C19: (within /usr/bin/mono)
==6699==    by 0x71680F8: ???
==6699==    by 0x71680A6: ???
==6699==    by 0x7167EF3: ???
==6699==    by 0x7160F11: ???
==6699==    by 0x715FFA1: ???
==6699==    by 0x715F154: ???
==6699==    by 0x56CC189: g_cclosure_marshal_VOID__POINTER (in /usr/lib/libgobject-2.0.so.0.1400.1)
==6699==    by 0x56BF918: g_closure_invoke (in /usr/lib/libgobject-2.0.so.0.1400.1)
==6699==    by 0x56D2D95: (within /usr/lib/libgobject-2.0.so.0.1400.1)