Comex has made known that tomorrow they will update JailbreakMe 3.0 to fix some issue related with installing some packages. The update will also include issue with Camera Connection Kit.
Comex tweet that they don’t understand the issue where Cydia starts to install and at instant disappears. If you are interested in updating the software then you can get it from Cydia but your device must already be jailbroken.
When update you with more information when available, so keep reading.