[Sony Ericsson Xperia Mini, Mini Pro, Xperia Pro, A] sirkay:
i dont know how ..

too many error on gallery/thumbnails. have you try to clear dalvik cache and fix permission?

08-07 16:42:58.245 E/CMarlinMediator(130): Error : MarlinMediator Failed to get TrustedTime
08-07 16:42:58.245 E/JHEAD (2525): can't open '/mnt/sdcard/DCIM/100ANDRO/DSC_0100.JPG'
08-07 16:42:58.245 E/JHEAD (2525): can't open '/mnt/sdcard/DCIM/100ANDRO/DSC_0100.JPG'
08-07 16:42:58.245 E/ThumbnailUtils(2525):
08-07 16:42:58.245 E/ThumbnailUtils(2525): java.io.FileNotFoundException: /mnt/sdcard/DCIM/100ANDRO/DSC_0100.JPG: open failed: EACCES (Permission denied)
08-07 16:42:58.245 E/ThumbnailUtils(2525):	at libcore.io.IoBridge.open(IoBridge.java:419)
08-07 16:42:58.245 E/ThumbnailUtils(2525):	at java.io.FileInputStream.<init>(FileInputStream.java:78)
08-07 16:42:58.245 E/ThumbnailUtils(2525):	at java.io.FileInputStream.<init>(FileInputStream.java:105)
08-07 16:42:58.245 E/ThumbnailUtils(2525):	at android.media.ThumbnailUtils.createImageThumbnail(ThumbnailUtils.java:115)
08-07 16:42:58.245 E/ThumbnailUtils(2525):	at android.provider.MediaStore$InternalThumbnails.getThumbnail(MediaStore.java:593)
08-07 16:42:58.245 E/ThumbnailUtils(2525):	at android.provider.MediaStore$Images$Thumbnails.getThumbnail(MediaStore.java:924)
08-07 16:42:58.245 E/ThumbnailUtils(2525):	at com.sonyericsson.gallery.cache.ThumbNailHandler.getImageThumbnail(ThumbNailHandler.java:99)
08-07 16:42:58.245 E/ThumbnailUtils(2525):	at com.sonyericsson.gallery.cache.CacheService.buildThumbnailForId(CacheService.java:897)
08-07 16:42:58.245 E/ThumbnailUtils(2525):	at com.sonyericsson.gallery.cache.CacheService.buildThumbnails(CacheService.java:775)
08-07 16:42:58.245 E/ThumbnailUtils(2525):	at com.sonyericsson.gallery.cache.CacheService.access$000(CacheService.java:87)
08-07 16:42:58.245 E/ThumbnailUtils(2525):	at com.sonyericsson.gallery.cache.CacheService$3.run(CacheService.java:1186)
08-07 16:42:58.245 E/ThumbnailUtils(2525):	at com.sonyericsson.gallery.cache.CacheService$2.run(CacheService.java:1159)
08-07 16:42:58.245 E/ThumbnailUtils(2525): Caused by: libcore.io.ErrnoException: open failed: EACCES (Permission denied)
08-07 16:42:58.245 E/ThumbnailUtils(2525):	at libcore.io.Posix.open(Native Method)
08-07 16:42:58.245 E/ThumbnailUtils(2525):	at libcore.io.BlockGuardOs.open(BlockGuardOs.java:110)
08-07 16:42:58.245 E/ThumbnailUtils(2525):	at libcore.io.IoBridge.open(IoBridge.java:403)
08-07 16:42:58.245 E/ThumbnailUtils(2525):	... 11 more
08-07 16:42:58.255 E/MiniThumbFile(2525): Unable to create .thumbnails directory /mnt/sdcard/DCIM/.thumbnails
08-07 16:42:58.265 W/MediaProvider(1764): original file hasn't been stored yet: /mnt/sdcard/DCIM/100ANDRO/DSC_0101.JPG
08-07 16:42:58.275 E/CMarlinMediator(130): Error : MarlinMediator Failed to get TrustedTime
08-07 16:42:58.275 E/MediaStore(2525): couldn't open thumbnail content://media/external/images/thumbnails/66; java.io.FileNotFoundException: Permission denied
08-07 16:42:58.275 V/MediaStore(2525): Create the thumbnail in memory: origId=7229, kind=1, isVideo=false
08-07 16:42:58.285 E/CMarlinMediator(130): Error : MarlinMediator Failed to get TrustedTime
08-07 16:42:58.285 E/JHEAD (2525): can't open '/mnt/sdcard/DCIM/100ANDRO/DSC_0101.JPG'
08-07 16:42:58.285 E/JHEAD (2525): can't open '/mnt/sdcard/DCIM/100ANDRO/DSC_0101.JPG'