ant release always rebuilds AIDL files on windows

[pps]

What can I do to fix or troubleshoot the issue with ant build? I tried to ant -v, ant -debug, but there is no useful info regarding this step.

The aidl step for some reason is exceptionally slow in windows and always gets rebuilt. I did clean svn checkout (I have plain vanilla build.xml) and then I do:
ant release

if i do ant release one more time it still take almost 2 minutes to build and it gets stuck on this part for 30 seconds or more:

-code-gen:
[mergemanifest] Found Deleted Target File
[mergemanifest] Merging AndroidManifest files into one.
[mergemanifest] Manifest merger disabled. Using project manifest only.
     [echo] Handling aidl files...
     [aidl] Found 95 AIDL files.
     [aidl] Compiling 95 AIDL files.

On Linux, it looks that this step doesn't take as much time it takes on windows (when it actually processes these 95 aidl files), also on second invocation of ant release it doesn't rebuild this step:

-code-gen:
[mergemanifest] Found modified input file
[mergemanifest] Merging AndroidManifest files into one.
[mergemanifest] Manifest merger disabled. Using project manifest only.
     [echo] Handling aidl files...
     [aidl] Found 95 AIDL files.
     [aidl] No AIDL files to compile.

Suggestions how to fix it?