Created attachment 576316 [details] make_temporary_files_use_timestamp User Agent: Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/535.2 (KHTML, like Gecko) Chrome/15.0.874.121 Safari/535.2 Steps to reproduce: The IMVU client has xulrunner embedded in it, and a flash widget embedded inside of that. The flash widget makes network requests, the result of which get cached to disk. Actual results: Generating temporary files performs a linear search for available filenames, which can create significant UI lag when there are enough files. Expected results: Temporary files should have more-unique filenames at initial generation, so that a search does not take very long to find an available filename. There is a patch attached that should fix it.