Ubuntu 12.04, LinuxMint 15 won't install on Windows 7

[sweber]

Windows 7 host: Windows 7 Home Premium, Service Pack 1, 64-bit

VirtualBox version: 4.2.18.r88780 (I verified the md5sum of the ISO after downloading)

Guest 1: Ubuntu 12.04 (ubuntu-12.04.3-desktop-i386.iso, 32-bit, I verified the md5sum of the ISO after downloading)

Guest 2: LinuxMint 15 (linuxmint-15-cinnamon-dvd-32bit.iso, I verified the md5sum of the ISO after downloading)

Attempting to install either of the guests listed above results in the guest freezing (no activity or screen updates). The guests have been left in this state overnight in some cases, but they never recover. This machine has a successful VirtualBox install of Ubuntu 10.04 (installation was done on a much older version of VirtualBox).

At one point I uninstalled and reinstalled VirtualBox.

The crash happens at different places in the Ubuntu install.

Last line in the Ubuntu log before forced shutdown: 00:02:22.577232 Display::handleDisplayResize(): uScreenId = 0, pvVRAM=0000000009bf0000 w=1024 h=768 bpp=32 cbLine=0x1000, flags=0x1
Last line in the LinuxMint log before forced shutdown: 00:00:21.919262 Display::handleDisplayResize(): uScreenId = 0, pvVRAM=000000000a860000 w=640 h=480 bpp=24 cbLine=0x780, flags=0x1




The log files are attached for the most recent attempts at installing each guest.