Fedora 22 vagrant 1.7.2 - virtualbox machine in gurumeditation state

Description of the problem

Today I've started my vagrant with as usual, but it hanged after writing the message "configuring network interfaces". I cancelled the machine booting by Ctrl+C and tried to restart the VM by vagrant halt, vagrant up. Unfortunately my machine ended in a gurumeditation error (thanks Virtualbox, I've learned something about Amiga on wikipedia ;)

Fixing

I found a lot of results via google about this problem. Mostly it were bugs in Virtualbox, problems with drivers, kernels incompatibility issues. Sometimes it helped somebody to disable nested paging or hardware virtualization.
It didn't help to me.

Fixed

Finally I've solved my issue by uninstalling Virtualbox 4.3.30, installing Virtualbox 5 and uninstalling Vagrant 1.7.2 and installing Vagrant 1.7.4

Virtualbox 5 was already in my oficial Fedora repo so sudo dnf install VirtualBox-5.0 did the trick. For Vagrant 1.7.4 I had to download the rmp package from vagrantup.com because there is only 1.7.2 version in the official repo at the moment.