Windows 7 Explorer Refresh Bug
Yes, I got “bitten” by this bug too 
If you google for “Windows 7 Explorer Refresh Bug”, you’ll get the picture. The problem seems to be very wide-spread. I, too, read many posts and tried different suggested solutions. In my case they just did not help.
The way I solved this issue on my PC (Windows 7 x64 Professional) was by deleting “Network Location” entries to places that are no longer accessible.
On the above picture you can see that at some point I added two Network Location items to shares on the machine with IP address 192.168.2.3, the machine was on line at the time. Later, this machine went off-line and this caused Explorer not to refresh itself when folders were modified – created, deleted or re-named.
After I deleted the inaccessible locations, logged off and logged in, the problem got resolved.
Hope it will help somebody else.