After that I've tried for the second time cleaning digKam configuration and databases and this time digiKam properly generated new configs and databases and then it worked - I could navigate, open photos, even download photos from camera's SDHC card. Then I've closed digiKam and tried to open it and... crash. Here's the log: digikam(5392)/digikam (core) main: Database Path: "/home/xeros/Obrazy" digikam(5392)/digikam (core) Digikam::SchemaUpdater::update: SchemaUpdater update digikam(5392)/digikam (core) Digikam::SchemaUpdater::startUpdates: Have a database structure version "5" digikam(5392)/digikam (core) Digikam::SchemaUpdater::makeUpdates: makeUpdates 5 to 5 digikam(5392)/digikam (core) Digikam::AlbumRootLocation::AlbumRootLocation: Creating new Location "/xeros/Obrazy" uuid "volumeid:?uuid=daaef39c-c512-498b-8ae0-c5105d9faba4" digikam(5392)/digikam (core) Digikam::CollectionManager::updateLocations: location for "/home/xeros/Obrazy" is available true digikam(5392)/digikam (core) Digikam::ThumbnailLoadThread::initializeThumbnailDatabase: Thumbnail db ready for use digikam(5392)/digikam (core) Digikam::IccSettingsPriv::scanDirectories: ("/usr/share/color/icc") digikam(5392)/kdecore (KSycoca) KSycocaPrivate::openDatabase: Trying to open ksycoca from "/var/tmp/kdecache-xeros/ksycoca4" Time elapsed: 76 ms Time elapsed: 20 ms Model: Time elapsed: 157 ms TextureColorizer: Time elapsed: 54 ms *** glibc detected *** digikam: free(): invalid pointer: 0x0bdbd6e0 *** ======= Backtrace: ========= /lib/tls/i686/cmov/libc.so.6[0x2206ff1] /lib/tls/i686/cmov/libc.so.6(cfree+0xd6)[0x220b806] /usr/lib/libstdc++.so.6(_ZdlPv+0x21)[0x57136f1] /usr/lib/libmarblewidget.so.4(_ZN6Marble13GeoDataObjectD2Ev+0x36)[0x6319456] /usr/lib/libmarblewidget.so.4(_ZN6Marble14GeoDataFeatureD2Ev+0x50)[0x630c7a0] /usr/lib/libmarblewidget.so.4(_ZN6Marble16GeoDataPlacemarkD1Ev+0x2e)[0x630a93e] /usr/lib/libmarblewidget.so.4[0x641afe2] /usr/lib/libmarblewidget.so.4[0x641c3db] /usr/lib/libQtCore.so.4[0x1f843ae] /lib/tls/i686/cmov/libpthread.so.0[0x51f80e] /lib/tls/i686/cmov/libc.so.6(clone+0x5e)[0x22687ee] ======= Memory map: ======== 00110000-00120000 r-xp 00000000 08:11 1097785 /usr/lib/libknotifyconfig.so.4.4.0 00120000-00121000 r--p 0000f000 08:11 1097785 /usr/lib/libknotifyconfig.so.4.4.0 00121000-00122000 rw-p 00010000 08:11 1097785 /usr/lib/libknotifyconfig.so.4.4.0 00122000-00193000 r-xp 00000000 08:11 1097771 /usr/lib/libsolid.so.4.4.0 00193000-0019a000 r--p 00070000 08:11 1097771 /usr/lib/libsolid.so.4.4.0 0019a000-0019b000 rw-p 00077000 08:11 1097771 /usr/lib/libsolid.so.4.4.0 0019b000-001af000 r-xp 00000000 08:11 2048234 /usr/lib/libkipi.so.7.0.0 001af000-001b0000 r--p 00013000 08:11 2048234 /usr/lib/libkipi.so.7.0.0 001b0000-001b1000 rw-p 00014000 08:11 2048234 /usr/lib/libkipi.so.7.0.0 001b1000-001b8000 r-xp 00000000 08:11 1146962 /usr/lib/libgphoto2_port.so.0.8.0 001b8000-001b9000 r--p 00006000 08:11 1146962 /usr/lib/libgphoto2_port.so.0.8.0 001b9000-001ba000 rw-p 00007000 08:11 1146962 /usr/lib/libgphoto2_port.so.0.8.0 001ba000-001c1000 r-xp 00000000 08:11 2049934 /usr/lib/libgif.so.4.1.6 001c1000-001c2000 r--p 00006000 08:11 2049934 /usr/lib/libgif.so.4.1.6 001c2000-001c3000 rw-p 00007000 08:11 2049934 /usr/lib/libgif.so.4.1.6 001c4000-001df000 r-xp 00000000 08:11 942081 /lib/ld-2.10.1.so 001df000-001e0000 r--p 0001a000 08:11 942081 /lib/ld-2.10.1.so 001e0000-001e1000 rw-p 0001b000 08:11 942081 /lib/ld-2.10.1.so 001e1000-00201000 r-xp 00000000 08:11 1151480 /usr/lib/libkresources.so.4.4.0 00201000-00202000 r--p 00020000 08:11 1151480 /usr/lib/libkresources.so.4.4.0 00202000-00203000 rw-p 00021000 08:11 1151480 /usr/lib/libkresources.so.4.4.0 00203000-00207000 r-xp 00000000 08:11 2050496 /usr/lib/libXtst.so.6.1.0 00207000-00208000 r--p 00004000 08:11 2050496 /usr/lib/libXtst.so.6.1.0 00208000-00209000 rw-p 00005000 08:11 2050496 /usr/lib/libXtst.so.6.1.0 00209000-0020b000 r-xp 00000000 08:11 2052035 /usr/lib/libXss.so.1.0.0 0020b000-0020d000 rw-p 00001000 08:11 2052035 /usr/lib/libXss.so.1.0.0 0020d000-0025f000 r-xp 00000000 08:11 2048049 /usr/lib/libphonon.so.4.3.80 0025f000-00261000 r--p 00051000 08:11 2048049 /usr/lib/libphonon.so.4.3.80 00261000-00262000 rw-p 00053000 08:11 2048049 /usr/lib/libphonon.so.4.3.80 00262000-002d1000 r-xp 00000000 08:11 1147020 /usr/lib/libkdcraw.so.8.0.0 002d1000-002d4000 r--p 0006f000 08:11 1147020 /usr/lib/libkdcraw.so.8.0.0 002d4000-002d5000 rw-p 00072000 08:11 1147020 /usr/lib/libkdcraw.so.8.0.0 002d5000-00312000 r-xp 00000000 08:11 2048076 /usr/lib/libQtSql.so.4.6.0 00312000-00313000 r--p 0003d000 08:11 2048076 /usr/lib/libQtSql.so.4.6.0 00313000-00314000 rw-p 0003e000 08:11 2048076 /usr/lib/libQtSql.so.4.6.0 00314000-00344000 r-xp 00000000 08:11 2049480 /usr/lib/liblcms.so.1.0.18 00344000-00345000 r--p 0002f000 08:11 2049480 /usr/lib/liblcms.so.1.0.18 00345000-00346000 rw-p 00030000 08:11 2049480 /usr/lib/liblcms.so.1.0.18 00346000-00348000 rw-p 00000000 00:00 0 00348000-00362000 r-xp 00000000 08:11 2048185 /usr/lib/libgphoto2.so.2.4.0 00362000-00363000 r--p 00019000 08:11 2048185 /usr/lib/libgphoto2.so.2.4.0 00363000-00364000 rw-p 0001a000 08:11 2048185 /usr/lib/libgphoto2.so.2.4.0 00364000-003c4000 rw-p 00000000 00:00 0 003c4000-00517000 r-xp 00000000 08:11 1146981 /usr/lib/libdigikamdatabase.so.1.0.0 00517000-00518000 r--p 00153000 08:11 1146981 /usr/lib/libdigikamdatabase.so.1.0.0 00518000-0051a000 rw-p 00154000 08:11 1146981 /usr/lib/libdigikamdatabase.so.1.0.0 0051a000-0052f000 r-xp 00000000 08:11 1974356 /lib/tls/i686/cmov/libpthread-2.10.1.so 0052f000-00530000 r--p 00014000 08:11 1974356 /lib/tls/i686/cmov/libpthread-2.10.1.so 00530000-00531000 rw-p 00015000 08:11 1974356 /lib/tls/i686/cmov/libpthread-2.10.1.so 00531000-00533000 rw-p 00000000 00:00 0 00533000-00541000 r-xp 00000000 08:11 2049968 /usr/lib/libXext.so.6.4.0 00541000-00542000 r--p 0000d000 08:11 2049968 /usr/lib/libXext.so.6.4.0 00542000-00543000 rw-p 0000e000 08:11 2049968 /usr/lib/libXext.so.6.4.0 00543000-00545000 r-xp 00000000 08:11 2049891 /usr/lib/libXau.so.6.0.0 00545000-00546000 r--p 00001000 08:11 2049891 /usr/lib/libXau.so.6.0.0 00546000-00547000 rw-p 00002000 08:11 2049891 /usr/lib/libXau.so.6.0.0 00549000-005d2000 r-xp 00000000 08:11 1151816 /usr/lib/libkexiv2.so.8.0.0 005d2000-005d3000 r--p 00089000 08:11 1151816 /usr/lib/libkexiv2.so.8.0.0 005d3000-005d4000 rw-p 0008a000 08:11 1151816 /usr/lib/libkexiv2.so.8.0.0 005d4000-0065e000 r-xp 00000000 08:11 1151476 /usr/lib/libkabc.so.4.4.0 0065e000-00660000 r--p 00089000 08:11 1151476 /usr/lib/libkabc.so.4.4.0 00660000-00661000 rw-p 0008b000 08:11 1151476 /usr/lib/libkabc.so.4.4.0 00661000-00662000 rw-p 00000000 00:00 0 00662000-006f6000 r-xp 00000000 08:11 1097776 /usr/lib/libkjs.so.4.4.0 006f6000-006fd000 r--p 00094000 08:11 1097776 /usr/lib/libkjs.so.4.4.0 006fd000-006fe000 rw-p 0009b000 08:11 1097776 /usr/lib/libkjs.so.4.4.0 006fe000-00704000 rw-p 00000000 00:00 0 00704000-00708000 r-xp 00000000 08:11 2051899 /usr/lib/libXdmcp.so.6.0.0 00708000-00709000 rw-p 00003000 08:11 2051899 /usr/lib/libXdmcp.so.6.0.0 00709000-0070b000 r-xp 00000000 08:11 2052689 /usr/lib/libXinerama.so.1.0.0 0070b000-0070c000 rw-p 00001000 08:11 2052689 /usr/lib/libXinerama.so.1.0.0 0070c000-0075a000 r-xp 00000000 08:11 1097768 /usr/lib/libkutils.so.4.4.0 0075a000-0075c000 r--p 0004e000 08:11 1097768 /usr/lib/libkutils.so.4.4.0 0075c000-0075d000 rw-p 00050000 08:11 1097768 /usr/lib/libkutils.so.4.4.0 0075d000-007b2000 r-xp 00000000 08:11 2048082 /usr/lib/libQtSvg.so.4.6.0 007b2000-007b3000 r--p 00055000 08:11 2048082 /usr/lib/libQtSvg.so.4.6.0 007b3000-007b4000 rw-p 00056000 08:11 2048082 /usr/lib/libQtSvg.so.4.6.0 007b4000-007f6000 r-xp 00000000 08:11 2048038 /usr/lib/libQtXml.so.4.6.0 007f6000-007f7000 ---p 00042000 08:11 2048038 /usr/lib/libQtXml.so.4.6.0 007f7000-007f8000 r--p 00042000 08:11 2048038 /usr/lib/libQtXml.so.4.6.0 007f8000-007f9000 rw-p 00043000 08:11 2048038 /usr/lib/libQtXml.so.4.6.0 007f9000-0081d000 r-xp 00000000 08:11 1974346 /lib/tls/i686/cmov/digikam: Fatal IO error: client killed KCrash: Application 'digikam' crashing...