The performance when running Ubuntu in VirtualBox is really bad for me without using Guest Additions. Guest additions also help with sharing clipboards. However, with Guest Additions, VirtualBox always crashes when I'm saving the state of the virtual machine.
Is there any way to improve performance and to enable shared clipboards, without using Guest Additions? Or better yet: anything I could do to make it stop crashing? I have enabled 3D acceleration and increased its memory as well as enabled bi-directional sharing but none of it makes any difference without Guest Additions.
I run VirtualBox 4.3.8 with Ubuntu 13 guest on a Windows 7 Ultimate 64 bit host.
Thanks in advance