zsync cannot finish download (aborted)

[psl]

Ubuntu 11.04, i386. zsync 0.6.1

I tested zsync and found a situation when it cannot finish download. zsync aborts after reading seed files.

zsync file used for my test:

# zsync http://psl.ic.cz/zsync/zorin-os-5-lite-32.iso.zsync

# ls -l
total 2028176
-rw------- 1 root root 692277248 2011-07-24 21:30 zorin-os-5-lite-32.iso
-rw------- 1 root root 692277248 2011-07-27 01:40 zorin-os-5-lite-32.iso.part
-rw-r--r-- 1 root root 692277248 2011-07-27 00:16 zorin-os-5-lite-32.iso.zs-old

# sha1sum *
475d56d813b46b453d060c77cbfc98e1faff6cef zorin-os-5-lite-32.iso
74723d4ade3988e8ffc116954e9119adf4db1a3f zorin-os-5-lite-32.iso.part
be06bad1f19442475284b10553901f5d9e99308f zorin-os-5-lite-32.iso.zs-old

Notice that file zorin-os-5-lite-32.iso is FINISHED. But there is a zorin-os-5-lite-32.iso.part file on the disk and I guess it is troublemaker.

How it looks? Run it:

# zsync http://psl.ic.cz/zsync/zorin-os-5-lite-32.iso.zsync
#################### 100.0% 345.3 kBps DONE

reading seed file zorin-os-5-lite-32.iso: *********************************************************************************************************************************************************************Read zorin-os-5-lite-32.iso. Target 100.0% complete. *
reading seed file zorin-os-5-lite-32.iso.part: *************************************************************************************************************************************************************************************************************************************************************************************Read zorin-os-5-lite-32.iso.part. Target 100.0% complete. *
Aborting, download available in zorin-os-5-lite-32.iso.part
#

[psl (slansky)]

I think that file changed on the file server. Whenever I download the file, I receive different copy. And official MD5SUM file is missing, so I cannot check when download iso image is correct.