Bug 151611

Version:           3.5.7 (using KDE KDE 3.5.8)
Installed from:    Gentoo Packages
Compiler:          gcc (GCC) 4.2.2 (Gentoo 4.2.2 p1.0) CFLAGS="-O3 -march=native -mtune=native -msse2 -mfpmath=sse -fomit-frame-pointer -pipe"
OS:                Linux

If I receive a vcard email event invitation, I can click on "accept" with kmail and the event is correctly shown on korganizer calendar page. But if I check again korganizer reopening it (having closed its window, but not ended the kde session), the event is gone, and looking in vxc.ics file in ~/.kde/share/apps/korganizer directory there is no trace of it, even if the old events are still present.
it happens quite often even not always, and it seems a bug.

Can someone help me or show me any solution, if this is not a bug?
of course I'm available for any further information.

Thanks.