Why VirtualBox window is transparent...

I have been using Compiz Fusion and VirtualBox for a while. They were both working well except I could not switch VirtualBox to fullscreen or seamless mode. I did not change any setting either in Compiz Fusion or VirtualBox, but these two days all black pixels have become transparent. What's the problem?... (If I shut down Compiz Fusion, VirtualBox displays coreectly.)

Another VMware problem

Forgot about this when writing the previous post..

I had an error like this when trying to start VMware Workstation in a Linux host:

*** attempt to put segment in horiz list twice
/opt/vmware/workstation/lib/bin/vmware: symbol lookup error: /usr/lib/libglade-2.0.so.0: undefined symbol: g_return_if_fail_warning

The workaround is to export an environment variable before running vmware:

export VMWARE_USE_SHIPPED_GTK='yes'

The GTK libraries in my system is binary incompatible with the ones used by the VMware team, so VMware must use the library files shipped with it instead of those in my system. Similar compatibility problems are not rare when it comes to a closed-source application that is dynamically linked against an open-source library...

Reference
[1] HOWTO: Install vmware workstation 6.0.3 build 80004 (March 14) on Sabayon x86-3.5 Loop2-r2
[2] VMWARE_USE_SHIPPED_GTK=force vmware

Arrow keys not working in VMware

Arrow keys (and also Ctrl, Win, etc.) don't work in VMware if running in KDE. This should be an upstream bug.

Workaround: Add this line to ~/.vmware/config (create it if necessary) and restart VMware:

xkeymap.nokeycodeMap = true

VMware will display a warning about keyboard layout. Simply ignore it.

Reference
http://www.ultimalinux.com/wiki/VMware#Function.2Farrow_keys.2C_etc._not_working