The most recent release is v18.104.22.168. This release does not have Intersil support. If you require Intersil support, use snapshot 2002-12-09 instead.
If you have problems with this version, you could try a CVS snapshot.
Kernel 2.6.x usb patch
To make your usb device functional, using this driver under 2.6 kernels ( < 22.214.171.124 version ), you have to download and install this patch.
To install, cd to /usr/src/linux-2.6.x/ and run:
gzip -cd your_download_path/patch-atmel_reset.gz | patch -p1