程序运行一段时间就自行退出，快把我困惑死了

编写了一个农场外挂，使用了QHttp，外挂功能都实现了，程序运行几十分钟到一个小时不等，就弹出程序异常错误，被系统终止了，eclipse 控制台报告：

QWaitCondition: Destroyed while threads are still waiting
QObject::killTimers: timers cannot be stopped from another thread
ASSERT failure in QMutex::lock: "Internal error, infinite wait has timed out.", file thread/qmutex.cpp, line 169

This application has requested the Runtime to terminate it in an unusual way.
Please contact the application's support team for more information.

 

能想到的地方都修改测试了，问题依然，崩溃中！现在怀疑是QHttp的bug，只要把http请求关闭，程序运行多长时间也不退出。

Qt4.5，现在换成Qt4.6了现象依旧。