'Not responding' every time I open databse

I compiled about 120 entries (15 fields, so its somewhat large, about 5mb file) into one spreadsheet, turned it into a database with drop down menus ect, but now I am unable to open it, because every time I do, I get 'not responding' a few seconds after trying.

I'm running intel core duo, 1.66ghz, 2gigs ram dd2, gforce 7800, and have nothing else running whatsoever, so I really don't think it could be the power of the computer causing this to happen.

Any help?

Managed to get it to run.. when the file finally tries tries to load, the autorecovery gives me this message...
Removed feature: AutoFilter from /xl/tables/table1.xml part (Table)
Removed feature: Table from /xl/tables/table1/xml part (Table)

And here's the file log listing repairs..
<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<recoveryLog xmlns="http://schemas.openxmlformats.org/spreadsheetml/2006/main"><logFileName>error026360_01.xml</logFileName><summary>Errors were detected in file 'C:\Users\user\Documents\Monk\Database Remake\MonkHost_CompileDone.xlsx'</summary><removedFeatures summary="Following is a list of removed features:"><removedFeature>Removed Feature: AutoFilter from /xl/tables/table1.xml part (Table)</removedFeature><removedFeature>Removed Feature: Table from /xl/tables/table1.xml part (Table)</removedFeature></removedFeatures></recoveryLog>