How to clear temp files/caches

Hey, I was watching some HD video streams yesterday and i went back to my macbook today with it telling me i had zero kb available. I was thinking that the stream must have gone into a cache somewhere, so i used cocktail to empty user caches, freeing up about 200mb. I also used the safari clear cache function and restarted but all im still at just 270mb free.
I think i had about 5gb free yesterday, so it went somewhere. Help?

in omni sweeper i am coming across some curiosities -
There are 2 "users" folders, both appear to be identical in size and contents. I was thinking it could be just the way the program shows "macintosh HD" and "username". the folder is 21.4 GBx2, so is my OS somehow making a duplicate users folder? Because i need to include the total 42.8GB there with the other totals omni gives me to get my hd capacity of 80gb.
i could do a pic but this is the output of the program:
21.4 GB Users
21.4 GB Users
13.3 GB Library
13.6 GB Applications
2.3 GB System
2.1 GB private -(used space on my linux partition)
1.7 GB Volumes
so this all adds up to about 75GB, but i dont see my bootcamp partition.? and the duplicate users folder? not making sense. but it adds up. my toshiba hd capacity is 74.5 according to disk utility, making up that is 56.5GB macintoshHD, my windows part is 14.2GB, and linx part is 3.4GB).
So yeah, weird that omni gets me the total space correct but, if i have 21.4GB of this duplicate folder then that could explain why i have always thought i was missing space... but within the finder, there is no indication of a duplicate folder, (also i used the program invisibles to show invisible folders and i still have only the one users folder when i look at mac hd on my macbook)
And not to further add to the stew, but omni comes up with that last big item, the 1.7gb Volumes folder. its contents are only a very few items that are contained on a separate hd i have currently hooked up to my tower. when you double click on a folder that omni shows in its list, the finder pulls up that folder, for my 2 users folders, finder on the tower pulls up two windows showing the good old "Users" folder within a list. When i click on that volumes folder, i get nothing. FYI, the volumes folder is apparently an invisible folder, it is useless so i will delete it.
good news there, but i am still wondering about the two users folders omni comes up with, i wouldnt know which to delete...
edit: i wanted to mention that there is only one user, but i did at one point a while ago attempt to change the computer name, dont know if somehow that could have resulted in this mysterious identically updated folder over time...
Message was edited by: kindkind1
Message was edited by: kindkind1

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I am using the new HTML5 JavaScript mapping API to render my map. I am using any one of the following browsers:
IE10 (v10.0.9200.16635)
Firefox (v23.0)
Chrome (v28.0.1500.95 m
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<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
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<meta http-equiv='Content-Type' content='text/html; charset=UTF-8'>
<script type='text/javascript' src='http://xxxx.xxxx.com:7002/mapviewer/jslib/v2/oraclemapsv2.js'></script>
<style type= 'text/css '>body {cursor:default;}</style>
<script language="JavaScript" type="text/javascript">
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<body onload="javascript:showMap()">
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This produces a correctly rendered map in my browsers, which displays the labels I expect.
Next, I changed the Labeling Function on my Geometry Theme: SRA_SUITE304_F1_ROOM, setting it to -1, so that object labels would not be displayed.
In Mapbuilder, I can preview the geometry theme, and it shows that no labels are displayed.
Still in Mapbuilder, I can preview the base map that the geometry theme is assigned to, and the basemap also shows that no labels are displayed for that theme.
I saved all my changes in Mapbuilder.
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2) purging the browser cache
3) restarting the mapviewer server
4) restarting the entire supporting weblogic server
None of these actions cause the map viewed in my browser to be updated to show the map without labels.
Note: If I create a new Tile Layer using the same base map, my changes are visible in the browser map.
What am I missing here?
What cache do I need to clear so that my map is displayed correctly in my browser after I make changes to the underlying Mapbuilder objects?
Thanks in advance for your help.

Thanks. That was the last key to the puzzle.
Here are the steps I now follow to ensure that changes made to underlying MapBuilder objects are visible in the browser.
Perform the following steps:
1) Modify the object (style, theme, base map, tile layer) in MapBuilder, and save all changes.
2) Using MapViewer Administration Console, Purge Cached Metadata for each affected datasource.
3) On the MapViewer server, clear the Map Cache directory. The location of the Map Cache directory is specified in the mapViewerConfig.xml file under the section "Map Cache Server Setting".
e.g.
cd <map cache dir>
rm -rf *
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