See:
Problems in Windows Explorer or the Windows shell after you install security
update MS06-015 (15 Apr-06)
http://support.microsoft.com/default.aspx/kb/918165
<QP>
.. Unable to access special folders like "My Documents" or "My Pictures".
.. Microsoft Office applications may stop responding when you attempt to save
or open Office files in the "My Documents" folder.
.. Office files in the "My Documents" folder are not able to open in
Microsoft Office.
.. Opening a file through an application's File / Open menu causes the
program to stop responding .
.. Typing an address into Internet Explorer's address bar has no effect.
.. Right-clicking on a file and selecting Send To has no effect.
.. Clicking on the plus (+) sign beside a folder in Windows Explorer has no
effect.
.. Some third-party applications stop responding when opening or saving data
in the "My Documents" folder.
</QP>
The Registry edit referenced in Resolutions section of 918615 above can be
implemented by downloading:
HP's Share-to-Web software - Fix (Line 383, Right)
http://www.kellys-korner-xp.com/xp_tweaks.htm
To use: Download the .vbs file and save it to your hard drive (you may want
to right click and use Save Target As). Double-click the vbs file. You will
be prompted when the script is done.