今天我遇到了联想手机的一个很麻烦的问题。我试着安装一个JAVA程序的时候突然有一个消息说『安装数量超过上限』。碰到这个问题后，我马上上网，开始找怎么才能解决这个问题。手机的型号是『联想P609』，而好像比较多联想手机都有那个问题。有的人说这个问题是系统的缺陷，有的人说这个限制是故意的。我找了很长时间，但是所有的答案都看起来比较复杂。一个方法是删除手机里面的cookies（信息记录程序），但是怎么做我也不清楚。况且，有时候用什么不正式的软件改变手机的数据可能破坏手机的系统。幸运的，我的朋友推荐我先备份个人的数据（电话簿、短信等），然后恢复出厂设置。他说的对，恢复出厂设置以后再要安装所有的JAVA程序，但是上面提到的那个限制已经没有了。

谢谢小杨！

I’ve encountered a very annoying bug on my new Lenovo P609 phone today which relates to the number of Java programmes that can be installed. I am not sure about the number of Lenovo’s non-Chinese-speaking customers but I thought I’d share my thoughts on the solution so other people won’t have to go through the same trouble as me. Apparently, some Lenovo models (and a limited number of mobiles from other companies) seem to be suffering from a bug which displays a message “Java installation limit reached” when trying to install new Java programmes after a certain period of time. Chinese websites suggest various measures, e.g. deleting the phone’s internal cookies. But using third-party software to make changes to the phone bears the danger of rendering your phone inoperable. Luckily, a friend of mine gave me a hint: what you need to do is to backup your personal data (phone book, SMS etc.) and revert all settings to factory default afterwards. You will have to reinstall all your Java applications, but the annoying nag screen will be gone.