i have this problem with a handful of files, where lav splitter can't seek through them
this one was muxed with haali, but the other files were muxed with mkvmerge.
I can't make a sample of it, so I'm posting the whole thing, in 2 zip pieces ( it is relatively small, lucky enough)
http://www.megaupload.com/?d=TT2YF81F
http://www.megaupload.com/?d=WWGJ44ZP