Expression Web 4太慢了

我有EW4的试用版。无论原因是什么，它运行得非常慢。即使我从一条线路移动到另一条线路（15秒），我也会浪费大量时间让程序响应。保存文件，打开和关闭文件需要更长的时间（30-45秒）。
我运行MS Vista（64位），内存充足。我对MW3没有这个问题。

I have the trial version of the EW4. Whatever the reason is, it is running very slow. I waste a lot of time for the program to respond even when I am moving from one line to another(15 sec). Saving files, opening and closing files takes even longer(30-45sec). I am running MS Vista (64 bit) with plenty of memory. I did not had this problem with MW3.