Kali on Windows 7

[Termin]

Hey Guys,
i used Virtualbox a long time without any problems on the same configuration. But since a cuple of days (everytime i open firefox) the Guest OS is lagging.

Host: Win 7 Home, Intel i5 -3230, Geforce GT730M, 8GB RAM

Guest configuration: Kali Linux, RAM 3 GB, CPU 2 Core, hardware virtualisation is enabled, Graphic memory : 128 MB, 3d acceleration is enabled (disabled same issue)

The system works normaly until firefox wasn't open. After it the system laggs totaly.

Htop: CPU: max 30 %, RAM: 1-2 GB used
VB Version: (I used the newest but downgraded after the first issues), Guest Extension is the right one.

Firefox is reinstalled

Sorry for my bad english.

Edit: I upgraded my graphic driver to the newest version.
I installed a new version of Kali on a new VB Guest. The problem isn't solved :-/

[socratis]

We're going to need to see a VM log from a complete VM run:

• Start the VM from cold-boot (not from a paused or saved state) / Observe error / Shutdown the VM.
• With the VM completely shut down (not paused or saved), right-click on the VM in the VirtualBox Manager and select "Show Log".
• Save only the first "VBox.log", ZIP it and attach it to your response (see the "Upload attachment" tab below the reply form).