Following-up @Miss Cellanie's comments, the rebuild index process is one I have had to use before.
If Google Desktop is no longer indexing new content or files past a certain date, make sure that indexing's still enabled. Here's how:
- Click the Desktop icon in your system tray.
- Select Options.
- Click the Desktop Search tab. If you're using an older version of Google Desktop, click Local Indexing.
- Select the 'Enable content indexing for new items' checkbox. For older versions of Google Desktop, deselect the checkbox next to 'Disable Indexing.'
- Make sure all relevant file types are selected in the 'Search Types' section.
- Click the Save Preferences button.
If you've correctly set your preferences and the problem persists, you may need to re-build your Google Desktop index from scratch to resolve the issue. Here's how:
- Uninstall Google Desktop and completely erase your old index.
- Click the Start menu on the computer taskbar.
- Select Programs.
- Select Google Desktop.
- Select Uninstall Google Desktop.
- Select the 'Remove completely for all users' option.
- Click the Yes button in the confirmation window.
- Deselect the 'Keep indexes in case I want to install Google Desktop again later' option.
Click the Uninstall button.
Make sure to uncheck 'Keep indexes in case I want to install Google Desktop again later' when uninstalling to completely erase your old index.
Restart your computer.
- Reinstall the latest version of Desktop from http://desktop.google.com. After reinstalling, Desktop should correctly index your computer's content.