Cannot click on Window Vista Taskbar

I have been having some strange problems with Vista lately. For the past few weeks, my computers been having bouts of me being unable to click the taskbar or system tray. When I try to click on it, it just beeps. After some googling, there are many opinions as to what had happened. But I found a solution that really works as follows:

1. Create a new admin account in Control Panel>User Accounts. Log into the new account
at least once to activate it. In this case, I have named it "NewAdmin"

2. Reboot the computer.

3. Log into new admin account.

4. Browse to C:\Users\OldAccount and select everything except: ntuser.dat, ntuser.dat.LOG1, and ntuser.dat.LOG2. These are hidden files. To make them visible, go to
Control Panel>Folder Options>View tab,
and mark the radio button for "Show hidden files and folders."

5. Copy (or move) everything except those 3 files to
C:\Users\NewAdmin

6.Reboot and log into the new account. After verifying that all data
has been transfered, go back to User accounts in the Control Panel and delete the old account. It will prompt you to delete all the files. You may choose to backup them into a folder first to check later what are the missing data you have not copied or moved.

7. Since the registry has been rebuilt, you should have no more problem to click on the taskbar.