It seems like the mass discussion started two days ago, but over at 2ch and other Japanese forums and boards there's been a serious glitch going through all the people who currently own Japanese Versions of Pokemon HG and SS, and that applies to all the Japanese releases, I'm posting this info for those who did import the HG/SS version, and of course, if this is a software related problem, those people who downloaded it.

The details of the glitch is not clear, nor is the conditions of the glitch occurring clear (One thing for sure is it's not time related, people at 2ch have reported the glitch occurring at game times of 60hrs-200hrs, or so they say.), but in a nutshell, the glitch makes your save vanish, just like the good ol' Generation I-III versions. Again, it's not confirmed whether it's a hardware or software problem.

Whether this glitch is real or not is well, unconfirmed, there is a chance this is a big, big load of BS, but it's always good to be careful about it, especially after HG/SS has two confirmed glitches (Folding up DS screen into sleep mode sometimes, and going up a ladder in the Twin Islands from its back leading up to Articuno can both crash the DS into black screens.) and a buttload of smaller ones.

 

eh, if it kills my sav, i'll just get my old backup sav. simple as that.

if it was on my real SS cartridge, then i'll be pissed. >

 

I don't know, I have just extend my game time well past 60 hours (188 hours) and its still there.

 

From the speculations currently flowing on the net (The websites in Asian areas, that is, apparently people who imported HG/SS haven't encountered this problem yet.), the reason this bug occurs seems to be because of the autosaving that goes on every Elite Four run, successful trade/battle, and box switching.

Reasoning behind this is said to be because the last time the game autosaves, the data, due to the glitch, becomes corrupted, and it tries to load the backup data (The time you saved prior to the autosave), but because the initial save is an autosave, both files could not be recognized and the game becomes botched and shows a blue screen of death (I'm not sure what this meant, but it's this: http://imepita.jp/20091019/522110)

If you have a niconico video site account, here's a video of what happened:
http://www.nicovideo.jp/watch/sm8634378

And this is the Japanese wiki page specifically discussing this glitch:
http://www31.atwiki.jp/hgssreport/pages/13.html

Again, I can't make it out whether it's a pure pile of BS or the horrifying truth...

 

yeah, and probably dropped his ds/ds lite/dsi while playing and screwed his sav up.

 

If this happened to me... i'd be GUTTED, im so into my pokemon...
It would be like repeating my childhood with pokemon blue >_<
I couldnt go through that again XD
But yeah, as stated before, The USA version will fix anything like this, they always do, thats why they let the jap's have the buggy versions first =O
There kinda like.... Test samples, and the US gives themself the best one lol