when not using fixed width fonts LXTerminal miscalculates letter spacing

[George Katsanos]

When I change the LXTerminal font preferences from Monospace to Ubuntu or any other non fixed width font I get weird letter spacings to the point some words can't even be read.

Description: Ubuntu 12.04.1 LTS
Release: 12.04

lxterminal:
  Installed: 0.1.11-2ubuntu1
  Candidate: 0.1.11-2ubuntu1
  Version table:
 *** 0.1.11-2ubuntu1 0
        500 http://be.archive.ubuntu.com/ubuntu/ precise/universe amd64 Packages
        100 /var/lib/dpkg/status

ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: lxterminal 0.1.11-2ubuntu1
ProcVersionSignature: Ubuntu 3.2.0-33.52-generic 3.2.31
Uname: Linux 3.2.0-33-generic x86_64
NonfreeKernelModules: nvidia
ApportVersion: 2.0.1-0ubuntu15
Architecture: amd64
Date: Tue Nov 20 19:01:42 2012
InstallationMedia: Ubuntu-Server 12.04.1 LTS "Precise Pangolin" - Release amd64 (20120817.3)
MarkForUpload: True
ProcEnviron:
 LANGUAGE=en_US:en
 TERM=xterm
 PATH=(custom, no user)
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: lxterminal
UpgradeStatus: No upgrade log present (probably fresh install)