It takes 50sec on my 2Ghz pentium M with 2Go of RAM. What takes time is the "scanning images in individual albums" part

digikam(29641): Root Album Path:  "/home/olivier/Images"
digikam(29641): Database Path:  "/home/olivier/Images"  
digikam(29641): SchemaUpdater update                    
digikam(29641): Have a database structure version  "5"  
digikam(29641): makeUpdates  5  to  5                   
digikam(29641): listFromType                            
digikam(29641): got listFromType                        
digikam(29641): Creating new Location  "/olivier/Images"  uuid  "volumeid:?uuid=00d20e42-af99-4a00-af4b-20e34446dcff"
digikam(29641): location for  "/home/olivier/Images"  is available  true                                             
digikam(29641) Phonon::KdePlatformPlugin::createBackend: using backend:  "Xine"                                      
QColor::setHsv: HSV parameters out of range                                                                          
Found dcraw version: 8.86                                                                                            
digikam(29641): KDirWatch method =  "INotify"                                                                        
digikam(29641): DigikamView::loadViewState()                                                                         
digikam(29641): ImagePlugin_Core plugin loaded                                                                       
digikam(29641): ImagePluginLoader: Loaded plugin  "ImagePlugin_Core"                                                 
digikam(29641): ImagePlugin_AdjustCurves plugin loaded                                                               
digikam(29641): ImagePluginLoader: Loaded plugin  "ImagePlugin_AdjustCurves"                                         
digikam(29641): ImagePlugin_AdjustLevels plugin loaded                                                               
digikam(29641): ImagePluginLoader: Loaded plugin  "ImagePlugin_AdjustLevels"                                         
digikam(29641): ImagePlugin_BlurFX plugin loaded                                                                     
digikam(29641): ImagePluginLoader: Loaded plugin  "ImagePlugin_BlurFX"                                               
digikam(29641): ImagePlugin_Border plugin loaded                                                                     
digikam(29641): ImagePluginLoader: Loaded plugin  "ImagePlugin_Border"                                               
digikam(29641): ImagePlugin_ChannelMixer plugin loaded                                                               
digikam(29641): ImagePluginLoader: Loaded plugin  "ImagePlugin_ChannelMixer"                                         
digikam(29641): ImagePlugin_Charcoal plugin loaded                                                                   
digikam(29641): ImagePluginLoader: Loaded plugin  "ImagePlugin_Charcoal"                                             
digikam(29641): ImagePlugin_ColorFX plugin loaded                                                                    
digikam(29641): ImagePluginLoader: Loaded plugin  "ImagePlugin_ColorFx"                                              
digikam(29641): ImagePlugin_DistortionFX plugin loaded                                                               
digikam(29641): ImagePluginLoader: Loaded plugin  "ImagePlugin_DistortionFX"                                         
digikam(29641): ImagePlugin_Emboss plugin loaded                                                                     
digikam(29641): ImagePluginLoader: Loaded plugin  "ImagePlugin_Emboss"                                               
digikam(29641): ImagePlugin_FilmGrain plugin loaded                                                                  
digikam(29641): ImagePluginLoader: Loaded plugin  "ImagePlugin_FilmGrain"                                            
digikam(29641): ImagePlugin_FreeRotation plugin loaded                                                               
digikam(29641): ImagePluginLoader: Loaded plugin  "ImagePlugin_FreeRotation"                                         
digikam(29641): ImagePlugin_HotPixels plugin loaded                                                                  
digikam(29641): ImagePluginLoader: Loaded plugin  "ImagePlugin_HotPixels"                                            
digikam(29641): ImagePlugin_InPainting plugin loaded                                                                 
digikam(29641): ImagePluginLoader: Loaded plugin  "ImagePlugin_InPainting"                                           
digikam(29641): ImagePlugin_Infrared plugin loaded                                                                   
digikam(29641): ImagePluginLoader: Loaded plugin  "ImagePlugin_Infrared"                                             
digikam(29641): ImagePlugin_InsertText plugin loaded                                                                 
digikam(29641): ImagePluginLoader: Loaded plugin  "ImagePlugin_InsertText"                                           
digikam(29641): ImagePlugin_LensCorrection plugin loaded                                                             
digikam(29641): ImagePluginLoader: Loaded plugin  "ImagePlugin_LensCorrection"                                       
digikam(29641): ImagePlugin_NoiseReduction plugin loaded                                                             
digikam(29641): ImagePluginLoader: Loaded plugin  "ImagePlugin_NoiseReduction"                                       
digikam(29641): ImagePlugin_OilPaint plugin loaded                                                                   
digikam(29641): ImagePluginLoader: Loaded plugin  "ImagePlugin_OilPaint"                                             
digikam(29641): ImagePlugin_Perspective plugin loaded                                                                
digikam(29641): ImagePluginLoader: Loaded plugin  "ImagePlugin_Perspective"                                          
digikam(29641): ImagePlugin_RainDrop plugin loaded                                                                   
digikam(29641): ImagePluginLoader: Loaded plugin  "ImagePlugin_RainDrop"                                             
digikam(29641): ImagePlugin_Restoration plugin loaded
digikam(29641): ImagePluginLoader: Loaded plugin  "ImagePlugin_Restoration"
digikam(29641): ImagePlugin_ShearTool plugin loaded
digikam(29641): ImagePluginLoader: Loaded plugin  "ImagePlugin_ShearTool"
digikam(29641): ImagePlugin_SuperImpose plugin loaded
digikam(29641): ImagePluginLoader: Loaded plugin  "ImagePlugin_SuperImpose"
digikam(29641): ImagePlugin_Texture plugin loaded
digikam(29641): ImagePluginLoader: Loaded plugin  "ImagePlugin_Texture"
digikam(29641): ImagePlugin_WhiteBalance plugin loaded
digikam(29641): ImagePluginLoader: Loaded plugin  "ImagePlugin_WhiteBalance"
digikam(29641): Theme file loaded:  "/usr/share/kde4/apps/digikam/themes/Dark"