Questions[cairo-dock](ubuntu)

I am running VirtualBox on Ubuntu 18.04 LTS had Windows 10 running in a guest machine, I had no problems with either Ubuntu or VirtualBox, I was also using Cairo dock and had no problems with that either, until today when VirtualBox crashed without warning, I could see that the guest machine which as running Windows 10 Pro 64b, was aborted and while I was trying to figure out what went wrong by looking in the VirtualBox logs, Ubuntu crashed.

When I restarted Ubuntu, the crash log reads:

-rw-r-----  1 me  whoopsie  2060878 Sep 17 17:41 _usr_bin_nautilus.1000.crash  
-rw-r-----  1 root whoopsie 91135782 Sep 17 15:38 _usr_lib_virtualbox_VirtualBoxVM.0.crash

Also cairo-dock failed to load and not only did it fail to load, there is actually no trace of it on my system and when I listed all installed apps in the terminal with the following commands, there is no cairo dock in the results, so it appears to have disappeared, its as if it was never on my system I cant find any trace of it:

apt list --installed |grep cairo  
dpkg --get-selections | awk '{print $1}' |grep cairo

Any ideas as to what could cause the crashes VirtualBox followed by Ubuntu and then cause an installed application to completely disappear off my Ubuntu system, apart from maybe a magician?

Does anyone know of a way to disable application switching when the scroll wheel gets bumped while the mouse is hovering over the Cairo Dock?

I don't see any options for this in the settings, but it's a fairly annoying "feature" that I'm hoping someone else has found a way to turn off.

In an up to date 11.10 the Cairo-Dock icons gradually become blue ? circle icons after a few hours or days after restart. The launchers still work when clicked, but they become harder to identify as more and more of them "forget" their original icon. Any workarounds to periodically refresh the dock or fixes?

How can I reliably disable snapping windows? When I drag a window around by its titlebar and near the upper edge, it tints and wants to maximize if I let go of the mouse then (trying to park my app there, not cover the whole workspace!)

Until Unity becomes more productive for my work style I switched to cairo-dock with effects for now (which also is not without issues).

As the logged in user I have run ccsm the Compiz manager and disabled Snapping Windows altogether, and verified many times. Doesn't seem to care. Haven't filed a bug rep yet as maybe there's some other setting I don't know about. Nothing else results in the CompizConfig search when I try snap or snapping. Any other ideas?

Ubuntu Desktop 11.10 32bit, hwinfo:

 28: PCI 100.0: 0300 VGA compatible controller (VGA)
  [Created at pci.318]
  UDI: /org/freedesktop/Hal/devices/pci_1002_7145
  Hardware Class: graphics card
  Model: "ATI Radeon Mobility X1400"
  Vendor: pci 0x1002 "ATI Technologies Inc"
  Device: pci 0x7145 "Radeon Mobility X1400"
  SubVendor: pci 0x1025 "Acer Incorporated [ALI]"
  SubDevice: pci 0x0094 
  Driver: "radeon"
  Driver Modules: "drm"
  Memory Range: 0xd0000000-0xd7ffffff (ro,non-prefetchable)
  I/O Ports: 0x2000-0x2fff (rw)
  Memory Range: 0xc8100000-0xc810ffff (rw,non-prefetchable)
  Memory Range: 0xc8120000-0xc813ffff (ro,non-prefetchable,disabled)
  IRQ: 46 (306 events)
  Module Alias: "pci:v00001002d00007145sv00001025sd00000094bc03sc00i00"
  Driver Info #0:
    Driver Status: radeon is active
    Driver Activation Cmd: "modprobe radeon"
  Config Status: cfg=new, avail=yes, need=no, active=unknown
  Attached to: #13 (PCI bridge)

I have two cairo docks, one is at the bottom , one is at the top of my desktop. How do I remove the top dock?