Resource temporarily unavailable with css file

[jeff14]

hi,  i used nginx 0.7.65 before, and i upgrade it to 1.0.0 yesterday,
but after this update ,i  got some strange error.
i have a normal html web page call myHtml.html, it linked a css file
called myCss.css.
1. i open this web page, this is ok
2. i change some content of myCss.css.
3. i refresh myHtml.html, but i get 500 error of getting the css file:
(/dat/web is my root directory)
2011/04/14 12:29:35 [crit] 23140#0: *124 open() "/dat/web/myCss.css"
failed (11: Resource temporarily unavailable), client: 192.168.1.201,
server: *.test.com, request: "GET /myCss.css HTTP/1.1", host:
"my.test.com", referrer: "http://my.test.com/"
4. i press F5 to refresh this page again , then i got the normal html
and css file, everything seems ok.

can everybody tell me what happen? thanks

Posted at Nginx Forum: http://forum.nginx.org/read.php?2,191155,191155#msg-191155