I have two service activators in the following combination

inound-channel-adapter--->service-activator1--->outbound-channel-adapter--->service-activator2
The application copies file from landing to destination. Problem is that service-activator2 is getting called in some cases even before the flow before that completes. Any reason for this?
here are my config details:
Code:
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
	   xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	   xmlns:integration="http://www.springframework.org/schema/integration"
	   xmlns:file="http://www.springframework.org/schema/integration/file"
	xsi:schemaLocation="http://www.springframework.org/schema/beans
						http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
						http://www.springframework.org/schema/integration/file
						http://www.springframework.org/schema/integration/file/spring-integration-file-2.2.xsd 
						http://www.springframework.org/schema/integration
						http://www.springframework.org/schema/integration/spring-integration-2.2.xsd">
	
	
	<file:inbound-channel-adapter id="filesIn" directory="file:C:/test/tmpInbound" scanner="myscanner">
		<integration:poller id="poller" fixed-delay="1000" />
	</file:inbound-channel-adapter>	
	
	
	<integration:service-activator input-channel="filesIn" output-channel="filesOut" ref="handler" />	
	 <file:outbound-channel-adapter id="filesOut" directory="file:C:/test/DR" delete-source-files="false" filename-generator="writer" ref="complete"/>
	  
	 	
<integration:service-activator input-channel="filesOut" ref="complete"/>	
	
	 
	<bean class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer" />
	<bean id="myscanner" class="org.springframework.integration.file.RecursiveLeafOnlyDirectoryScanner" />
	<bean id="handler" class="com.watcher.Handler" />
	<bean id="writer" class="com.watcher.Writer" />
	<bean id="complete" class="com.watcher.Complete" />
</beans>
Heres the application logging that shows the erratic behaviour. Bitmap Image1.bmp is getting picked up by the second service-activator even before th inbound poller picks it up. As a result the copy fails.

************start***************
generateFileName(C:\test\tmpInbound\Bitmap Image0.bmp)
{timestamp=1358314500737, id=575d8e7d-a959-4b8a-b5b6-19689588319c}
Bitmap Image0.bmp
Original ---> C:\test\tmpInbound\Bitmap Image0.bmp
Final --> \Bitmap Image0.bmp0.13921170863669796
*************done***************

Jan 16, 2013 12:35:01 AM org.springframework.integration.file.FileReadingMe ssageSource receive
INFO: Created message: [[Payload=C:\test\tmpInbound\Bitmap Image1.bmp][Headers={timestamp=1358314501783, id=6f807524-33a1-4ed5-8e86-907c9a63f6e2}]]
[COMPLETE in sservice-activator2] C:\test\tmpInbound\Bitmap Image1.bmpJan 16, 2013 12:35:02 AM org.springframework.integration.file.FileReadingMe ssageSource receive
INFO: Created message: [[Payload=C:\test\tmpInbound\Bitmap Image2.bmp][Headers={timestamp=1358314502799, id=33a7932c-0d2a-444f-bf5a-a85f0bfac6f7}]]

************start***************
generateFileName(C:\test\tmpInbound\Bitmap Image2.bmp)
{timestamp=1358314502799, id=8a2695bf-0b86-4cfa-9d22-f97e110258c0}
Bitmap Image2.bmp
Original ---> C:\test\tmpInbound\Bitmap Image2.bmp
Final --> \Bitmap Image2.bmp0.19998457677029258
*************done***************
While for the remaining two files its not getting called at all... plz help


Thanks
Anirban