vw.css is a template in the styles. If this template is unedited, then it looks like the old cached version of the CSS was not removed from the file system, because the contents of the CSS do not match the one from the upgrade.
It's possible your PHP did not have permission to change the /clientscript/vbulletin_css/ folder at the time you upgraded. If this is the case, you will have to correct the file permissions, then manually rebuild the styles (visit admincp/template.php?do=rebuild).