apt-get install libncurses5-dev 提示E: Unable to locate package libncurses5-dev

环境：ubuntn 10.10
编译内核，升级库的时候出现这个情况，换一台PC机则可以升级
   如果apt-get install libncurses5或者apt-get install libncurses5w的话就提示

libncurses5 is already the newest version.
0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.

  但是仍然用不了make menuconfig命令进行配置仍然
提示错误
root@ubuntu:/home/wfjiang/kernel/linux2.6.28# make menuconfig
  HOSTCC  scripts/kconfig/conf.o
scripts/kconfig/conf.c: In function ‘conf_askvalue’:
scripts/kconfig/conf.c:104: warning: ignoring return value of ‘fgets’, declared with attribute warn_unused_result
scripts/kconfig/conf.c: In function ‘conf_choice’:
scripts/kconfig/conf.c:306: warning: ignoring return value of ‘fgets’, declared with attribute warn_unused_result
  HOSTCC  scripts/kconfig/kxgettext.o
*** Unable to find the ncurses libraries or the
*** required header files.
*** 'make menuconfig' requires the ncurses libraries.
***
*** Install ncurses (ncurses-devel) and try again.
***
make[1]: *** [scripts/kconfig/dochecklxdialog] Error 1
make: *** [menuconfig] Error 2
请大家赐教!

libncurses5-dev这个已经安上了，缺少另一个ncurses (ncurses-devel)

要先更新一下ubuntn相关的组件，用apt-get install update ，然后执行更新库的命令apt-get install libncurses5-dev，就可以查找到要升级的库补丁了