Subtitles run 17-18 seconds ahead of the audio

Ever since the "improvement" earlier this year with the truly horrible "NEW" BT Vision software update (was it in July?) I've been having problems with subtitled programs - my wife needs the subtitles.
On RECORDED programs many times the subtitles shown on the screen are about 17-18 seconds AHEAD of the audio track.
SOMETIMES turning OFF (standby) the BT Vision box, turning it back on, reselecting the recorded program and selecting "Continue" corrects (synchronises) the subtitles with the audio but ...
...within a few minutes the subtitles "jump" ahead 17-18 seconds AGAIN!
However the majority of times even the "turn off, turn back on" doesn't "fix" the synch problem :-(
This problem NEVER occurred with the "old" BT Vision software (before July).
Has anyone else experienced this problem or is it just a problem with MY black box?
The BT helpline just tell me to "factory reset" the box but that DOESN'T fix it and the wife shouts at me because she loses all the recorded programs every time that I do a reset :-(
It has never happened watching LIVE programs - only RECORDED programs

Well Drama & Dave are both UKTV channels and presumably would have similar standards for transmission so similar results (problems) are to be expected.
There have been several problems reported with recorded Film4 subtitles on various platforms in the last year.
On the Youview community
http://community.youview.com/youview/topics/subtitles_on_film_4
It is probably a channel provider problem and they need to provide transmissions to a standard that willl allow subtitles to play properly on recordings.Getting them to acknowledge it and to do something will be a challenge.

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First off, I'd like to say thanks to the gentlemen who helped with my last question; you guys lead me to the information that allowed me to figure out what was wrong and how to fix it. I now have a new problem that's making me tear my hair out, and I'm hoping you guys can help me with this one as well.
Background:
I'm attempting to make a video resume to supplement my paper resume in order to get a job with a technology educator called Techshop. I have an old video production degree, but I'm new to digital editing. For equipment I have a reasonably powerful computer (it exceeded the specs), a Panasonic HC-V10 camera (it records in ACVHD lite 720 60p, I think), Premier Elements 10, and a file viewer and converter called Wondershare Video Converter Platinum.
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I set up my project as ACVHD lite 720 60p and, again not understanding what I was doing, washed all the raw footage through the video converter. This was to get the resolution of the video up to 1280X720 from 960X540 and to label the video instead of just having numerical codes (pre-sorting). I was changing the resolution because I couldn't find a Premiere preset for that resolution. I converted the audio at 48 MhZ (after initially converting at a sample rate of 44.1, which seemed to cause a problem-though in hindsight, it may not have), which is the same as my project preset.
After converting the footage, it appeared to play perfectly in Wondershare. I looked at the footage with MediaInfo, and it appeared to match my video presets exactly. I used Get Media to pull the files into Premiere, and that's when it hit the fan. The audio was outracing the video! At the start of the clip it appeared to be in synch. A few seconds in, and there was 'something funny going on'. A minute in and it was badly out of synch, and a few minutes into a clip (several takes in one clip) it was so badly out of synch I couldn't even match the sections up. The audio ended before the video in every clip I imported. I'm not sure, but I think it's losing about 2 seconds a minute. I also tried a test export, and the problem was exactly the same.
Now here's the interesting wrinkle. When I look at the Properties of the clips in Wondershare and MediaInfo, they both tell me the frame rate is 29.97 fps and the audio is sampled at 48MhZ. However, when I look at the Properties of the same clip in Premiere, it says the audio sample rate was 48MhZ, but the frame rate is 29.00! If I'm calculating this correctly (though I'm not certain I am), I think losing .97 frames per second accounts for the audio/video missmatch-the video is playing slightly slower than the audio.
As an afterthought, when I Get Media the files into my Premiere project, I get a tiny message at the bottom of the screen that says Premiere is Conforming each video with a progress bar, leading me to believe that the project presets do NOT match the source video; only problem is, Wondershare and MediaInfo say it does!
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What is happening? How come Premiere is saying that these files have a framerate of 29.00 fps when everything else says they're 29.97? Did I convert it oddly? I checked, and I set the frame rate on Wondershare to 29.97 (which is what it and MediaInfo both say the video is playing at). I even re-converted some of the video from the raw source with Wondershare at at 29.00 setting, and it STILL has the missmatch problem. Did Premiere interpret it strangely? If so, any idea why? It doesn't appear to need to Render-there's no red bar above my project or anything.
Also, is there a way I can tell Premiere to play the video back with the same audio rate, but at 29.97 fps instead of the 29.00 fps it says it's using? Or stipulate that the video files be played at the correct rate, or something? Or really, any other ideas on how to address this issue? Uncoupling the video and audio and then time-stretching seems very imprecise and cumbersome, so I'd rather not try it. I'd like to simply adjust Premiere to use the video correctly, since my video is already labeled and correctly sized (and some of it is cropped and color corrected too).
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I don't know why the audio sync problem is happening but I can offer a workaround that has helped me salvage files that were not able to be reshot. The common denominator for the audio sync problems I have encountered in (some, not all) clips were 60fps. It has been a while since I had to do this so please bear with me as I am doing this from memory. Also, this is based on PE10 but will probably work with older versions but I don't own any.
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Subtitles run 17-18 seconds ahead of the audio

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