I installed VMware-Player-3.1.6-744570.i386 on Ubuntu 11.4. The 27.5 GB disk was about 45% full. I then used VMware-Player to form a virtual machine for Centos, using ISO files for CentOS-6.5-i386. I had done this on an old laptop, that also had Ubuntu 11.4 installed, and centos ran fine in the VM.
However, in both cases, when I installed centos VMware-Player asked me if I wanted to install an update. It was taking too long on the old laptop, which tends to overheat so I declined to do so on the laptop. However, I decided to let the update run overnight on the desktop. When I came down in the morning, the update was still running and there was only 1.5 GB left on the HD. I used the disk usage analyzer and found that most of the disk space being used was in mu home directory. However, when I went to my home directory and ran
sudo du | sort -n
the only recently update directory with heavy disk usage was the directory with centos ISOs and it was only taking up 4.8 GB.