Hi , after i clean cache , i see critical warning in my log, its normal?

2013/03/05 12:41:42 [crit] 40771#0: unlink() "/nginx/temp/proxy/3/9b/79fac0c8634496bb89b7d9d9dd3349b3" failed (2: No such file oectory)
2013/03/05 12:41:42 [crit] 40771#0: unlink() "/nginx/temp/proxy/f/0c/f04ebf30ad0cea667ee5938fe09660cf" failed (2: No such file oectory)
2013/03/05 12:41:42 [crit] 40771#0: unlink() "/nginx/temp/proxy/a/0e/2dd596f873e4901c7856634eff8470ea" failed (2: No such file oectory)
2013/03/05 12:41:42 [crit] 40771#0: unlink() "/nginx/temp/proxy/1/6b/16e2a000c02197d069b9d50170ec56b1" failed (2: No such file oectory)