Tech note
Damn. Wish I'd found this many years ago.
In Windows XP, I've been annoyed for a long time by molasses-like sslloowww file opening. Almost every change of directory in the file-open dialog takes several seconds, and the interval is variable. Slows down everything, and breaks the rhythm of "assembly-line" operations on graphics or text. Especially annoying when building something for Poser, because Poser's folder structure requires an ungodly number of up-the-tree and down-the-tree moves.
Several times through the years I've looked for answers, but for some reason didn't find a useful tip until this morning. The tip is
here, dated 2003.
The solution is simple.
Use Regedit to edit the registry.
Locate this place in the hierarchy:
HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer
See if a key named NoRecentDocsHistory already exists under this heading.
If it does exist, set its value to 1.
If it doesn't exist, create a new key named NoRecentDocsHistory and set its DWORD value to 1.
Magic! After closing Regedit, all file-opens are now immediate.