Problems with streaming f4v files longer than approximate 1 hour

Hey Everybody!
I have a problem streaming on-demand f4v-files longer than 1 hour! The video starts normaly playing the stream and the player shows the correct overall duration. But if you start skipping/seeking the overall duration change to 13 h 20m and 28s (instead of 1 hour) and the stream breaks down. All f4v files with less than one hour duration works fine with playing and skipping!
I encode the f4v files with Adobe Media Encoder. I have also checked the f4v file with FLVcheck (passed). So, does anybody have an idea in fixing this problem and which format is the best for FMS streaming (MP4, FLV, F4V?)?
Thanks
Hinricht
SAMPLE: Try to skip/seek and check the duratoin!
http://webcast.hfmt-hamburg.de/archiv/2011_06_05_Master_Basica.html
SOURCE:
<object width="1024" height="576">

<param
name="movie" value="http://fpdownload.adobe.com/strobe/FlashMediaPlayback.swf">
</param>
<param
name="flashvars" value="src=rtmp://flash.hfmt-hamburg.de/vod/mp4:2011_06_05_Master_Basica.f4v&controlBarMo de=docked&streamType=recorded &backgroundColor=000000&volume=1&scaleMode=letterbox&verbose=false&highQualityThreshold=1 025&urlIncludesFMSApplicationInstance=false&autoPlay=true">
</param>
<param
name="allowFullScreen" value="true">
</param>
<param
name="allowscriptaccess" value="always">
</param>

<embed
src="http://fpdownload.adobe.com/strobe/FlashMediaPlayback.swf" type="application/x-shockwave-flash" allowscriptaccess="always" allowfullscreen="true" width="1024" height="576" flashvars="src=rtmp://flash.hfmt-hamburg.de/vod/mp4:2011_06_05_Master_Basica.f4v&controlB arMode=docked &streamType=recorded&backgroundColor=000000&volume=1&scaleMode=letterbox&verbose=false&hi ghQualityThreshold=1025&urlIncludesFMSApplicationInstance=false&autoPlay=true">
</embed>
</object>

To complicate this further, I found I wasn't able to output F4v files from Adobe Media Encoder (Premiere Pro CS4), without the file freezing at 1 hour 11 minutes and 34 seconds. I output 5 different 2-hour clips, played them back in Adobe Media Player and all froze exactly (to the second!) at 1 hour 11 minutes and 34 seconds. Found it interesting and inexplicable that this poster had exactly the same issue, but involving software that is completely different - http://forum.videohelp.com/threads/53987-Virtual-Dub-Strange-error-help-needed-ASAP Can anyone make sense of this?

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