What's happening on project start?

i've read several threads concerning or similar problems , i'm still confused.

 

basic observation everytime launch ppro cs5 , start existing project last step loading file assets of project in process takes annoyingly long time complete.  example project has 300 pure video files (m2v) , 20 audio files (wav) takes 8 minutes load these assets - each time start project anew.  judging progress note in lower left of window, virtually time spent on m2v video files, not audio.  see no evidence of video file conformation - preview file folder , encoded files folder empty , media cache has audio files (.pek) in it.  going on takes long , why go on each time reopen project?

 

particulars of system:

       i7 930 2.8ghz quadcore hyperthreading

       12gb of memory

      windows 7 64-bit

       nvidia quadro fx 4800 display processor

       4 7200rpm 1tb drives os on one, cache folders on another, , project files on third

 

no networked storage, no reloation of files or folders during projects.

 

all source files brought projects through import process.  problem large batch imports discussed in earlier thread, otherwise imports seem normal.  after import .pek file created in media cache folder each audio file , 4kb .xmp file created in same folder source files each video file.

 

i thought ppro added xmp tracking data video files when , put data in separate .xmp file when not.  thought way of tracking source files subsequent activity, reopening project, not have start scratch each time.  last mod dates on source file have not been altered, assumed ppro not xmp data them , instead created sidecar files. .xmp files seem have no effect on subsequent source file loading.

 

also have no "project file bloating" per earlier thread.

 

do live annoyance or can done reduce project loading times?

premiere has check every file make sure same last time project opened.  otherwise couldn't 'play' file.  process used happen while waited on splash screen.  @ least happens in background can sort of work done while it's checking.

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