Dropbox folder icon overlay problem and solution

After installed Dropbox, TortoriseSVN 64, and Office 2010 on Windows 7 Enterprise, Dropbox folders do not show proper icons. Two possible reasons:

1) Conflicts between TortoiseSVN and Microsoft Office 2010. The reason is that SharePoint Workspace adds a few Groove Explorer Icon overlays to the system.
Fix: Remove Microsoft SharePoint Workspace.

2) Conflicts between TortoiseSVN and Dropbox: Fix (Copied from http://bit.ly/wW7bsZ):

Step1: Start the registry editor (regedit) and navigate to the:

HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\
  Explorer\ShellIconOverlayIdentifiers

Step2: Backup the entire branch. JIC.

Step3: Rename overlays that are rarely used and not essential for everyday work. I personally added 'Z_' to these:

• Offline Files
• TortoiseLocked
• TortoiseIgnored
• TortoiseUnversionsed

Step4: Reboot. (Or just restart Windows Explorer)