Put them in the other widget folder. Do the other people who use your computer really want all your widgets!? (EDIT: Don't move the standard Apple ones out of this folder though)
Repair permissions:
1. Apps>Utilities>Disk utility
2. Click on your drive.
3. Click "repair disk permissions"\
4. Wait and you're done.
From now on, use your home folder - DON'T touch the library folders outside your home.
For a start, if you have to re-install OS X or upgrade, you will loose all the data in the system and global library folders.
The home folder means a lot more than you might think!