Hey, i have the exact same problem, but i noticed what's wrong (ofcourse i have no idea how to fix this), but that happens only when Subtitles are displayed and till the end of that subtitle, when there are no subtitles, everything works just fine + this only happens in fullscreen mode (double click) playing .mkv files, if you dont have fullscreen, everything works just fine...

I didnt have that problem before i buyed the new monitor, now i have "Samsung SyncMaster TA550" and i have that problem =/ No idea what to do, since i tried some other players and it works fine on all of them...

And yes, i'm using BS Player 2.58 Beta
---
Slovenian:
Lahko pa ?e slovensko povem, bo mogo?e malo bolj natan?no, torej se zgodi samo, ko ho?em gledat .mkv film in samo, ko preklopim v fullscreen na?in, v bistvu "?tekne" slika, par frejmov se predvaja naprej, par pa nazaj, to se zgodi samo takrat, ko se poka?ejo podnapisi, torej, ko se podnapis prika?e, se zgodi to, ko zgine, pa je vse tako kot mora bit, torej, ?e izklopim podnapise, deluje vse brez problema, mam pa BS Player 2.58 Beta.

Ta problem pa se mi dogaja sedaj, ko imam novi monitor (katerega ime sem napisal zgoraj), prej teh problemov nisem imel, mogo?e je problem, da je ta monitor 16:9 widescreen (torej pri gledanju nimam zgoraj ni? ?rnega, ker monitor poka?e celo sliko), prej sem pa imel 4:3 (in sem imel zgoraj in spodaj malo ?rno, ker je bila pa? slika predolga) in seveda ni bil FULL HD.

In pa, ?e ?e to kaj pomaga, to se mi dogaja, ko gledam The Big Bang Theory, natan?neje (720p.HDTV.x264.AC3-CTU).

LP