Java应用程序在win32上运行正常，但在win64上运行不正常

I am a newbie to Java and I have this app developed by someone else which is having some issues. This Java app works well on windows xp 32 bit, but there is a delay while running on 64 bit windows 2008 R2 server. I have asked the customer to make sure that they are running the 32 bit version of JRE. I have checked the traces for the application and the application has an issue while calling a synchronized block always. This synchronized block adds the data into a queue from which it is picked up by some other process. I have checked the traces if some other process is using the block but it isn’t. The only confusing part is that the same app runs perfectly on windows xp 32 bit. I am a newbie to Java and I have this app devel