我的配置：pIII 667  coppermine ,256 sdram ,60G
从stage1开始安装，到执行script/bootstrap.sh 时出错，如下：
configure: WARNING: If you wanted to set the --build type, don't use --host.
    If a cross compiler is detected then cross compile mode will be used.
checking for BSD-compatible install .../bin/install -c
checking whether build enviroment is sane... configure: error: newly created file is older than distributed files!
Check your system clock

!!! ERROR: sys-apps/sed-4.0.7 failed.
!!! Function econf, Line 338, Exitcode 1
!!! econf failed
我试着从stage2开始，emerge system的时候还是出现同样错误。
请教各位达人和斑竹，这是什么原因？？？？　　　　　　

Check your system clock