My Documents disappeared - new TEMP folder in its place??

seems like user profile got mess up. 
how many user accounts do you have? 
if you only have one.

Try create new user and set it as Administrator.
Then login with that new user account and check My Documents properties


as next step
- login with new user you just created.
- right click on "My Computer"
- left click on "Properties"
- click on "Advanced" tab
- in middle section you will see users profile and click on "Settings"
- left click on the line with new username
- click on "Copy To"
- click on "browse"
- then go to C:\Documents and Settings\{your old username} and click "OK"
- then click "OK" one more time to close the dialog
- close everything out
- logout new user
- log back in with old user

see it fix. you might lose those shortcuts on desktop. you may backup them before you do.

backup all the documents under "My Documents" before you do just in case if you do something wrong. You can find your documents from there:
C:\Documents and Settings\{your old username}\My Documents