Steps to reproduce:
1. Add events to you're calendar
2. Let them be indexed by beagle
3. Search for one of them in best
4. Open it in best

Stack trace:
Backtrace was generated from '/usr/bin/evolution'

Using host libthread_db library "/lib/libthread_db.so.1".
`shared object read from target memory' has disappeared; keeping its symbols.
[Thread debugging using libthread_db enabled]
[New Thread -1209108816 (LWP 5076)]
[New Thread -1342358624 (LWP 5097)]
[New Thread -1300399200 (LWP 5096)]
[New Thread -1352848480 (LWP 5094)]
[New Thread -1278760032 (LWP 5080)]
[New Thread -1267930208 (LWP 5079)]
[New Thread -1257034848 (LWP 5078)]
0x003fc402 in __kernel_vsyscall ()

+ Trace 65147

Other information:
When I search for an event that I have in my calendar with beagle it get
those nicely listed in best. When I click on an event to open it,
evolution starts but before it's done it crashes and gives this error.

System information:
Fedora Rawhide 
rpm -qa evolution* gives me this:
evolution-sharp-0.10.2-3
evolution-webcal-2.4.1-2
evolution-devel-2.5.4-2
evolution-data-server-1.5.4-2
evolution-data-server-devel-1.5.4-2
evolution-2.5.4-2

rpm -qa beagle gives this:
beagle-0.1.4-3

rpm -qa mono* gives this:
mono-web-1.1.12.1-1
mono-data-1.1.12.1-1
mono-winforms-1.1.12.1-1
mono-core-1.1.12.1-1
mono-devel-1.1.12.1-1
mono-data-sqlite-1.1.12.1-1