I really think it would be convenient if there was an option under system or advanced options for clearing / rebuilding your computer's icon cache.
Why? When your making icons with Photoshop or any other program, after you rename a icon that has existed on your computer before and its cached, and then you create a new one with the same file name it will show as the original icon that existed first. Another use, sometimes icons for programs will show up as a blank default white page even if the program hasn't been removed, this can be quite annoying and can be fixed with clearing / rebuilding the icon cache.
The current work around:
1. Close all folders that are currently open.
2. Open Task Manager
3. End Explorer.exe
4. Click File > New Task (Run…)
5. Type CMD.EXE
6. Commands:
CD /d %userprofile%\AppData\Local
DEL IconCache.db /a
EXIT
7. Click File > New Task (Run…)
8. Type EXPLORER.EXE
Obviously this is a bit time consuming, opening up CCleaner would be much easier then all that