Hudson and maven file encoding problem

[Per Ivar Gjerløw]

Hi

I think I've tried everything, but I'm still confused how to handle problems with file encoding. 
We're using maven 2.2.1 and Hudson 1.382. We're building on Linux (Redhat 5.5) and have a master-slave installation in our linux build server.

When we're building a maven project for a slave through Hudson we're gettiing the warning below:
Using platform encoding (ANSI_X3.4-1968 actually) to copy filtered resources, i.e. build is platform dependent!

And then, we're getting problems in compiling and testing our code. We're getting this message: unmappable character for encoding ASCII

We've tried to explicitly set the encoding in the root pom.

both
<properties><project.build.sourceEncoding>UTF-8</project.build.sourceEncoding></properties

and 
<configuration><encoding>UTF-8</encoding</configuration> for the maven-compiler plugin 

In addition, we've also tried to set the MAVEN_OPTS to -Dfile.encoding=UTF-8 (in Hudson)

but none of them actually worked. Now we're getting this message: unmappable character for encoding UTF8 (note: without a dash)

If I build the project directly from the command line, it works! 
(previously, we were getting this message: (ISO-8859-15 actually) to copy filtered resources, i.e. build is platform dependent!)

Does someone have any idea what I'm missing?

--
Regards,

Per Ivar Gjerløw