> 
> I'm trying to update 1.5.3_ALPHA sources wgich usually works flawlessly.
> 
> Got this error:
> 
> cvs server: Updating src/dist/am-utils
> cvs server: Updating src/dist/am-utils/amd
> cvs server: Updating src/dist/am-utils/amq
> cvs server: Updating src/dist/am-utils/aux
> cvs [server aborted]: cannot open directory /cvsroot/basesrc/dist/am-utils/aux: No such file or directory

You need to remove the aux directory manually, and re-update.

The aux directory was empty and was causing problems for people running 
cygwin (thank-you Microsoft: why should "aux" be a reserved file name?)

R.