Can you post the results of the following command please:
DBCC CHECKDB (yourdbname) WITH ALL_ERRORMSGS, NO_INFOMSGS
It shouldn't take 3 days to run on a 4-GB database unless there's something very badly wrong with you I/O subsystem.
Paul Randal
CEO, SQLskills.com: Check out SQLskills online training!
Blog:www.SQLskills.com/blogs/paul Twitter: @PaulRandal
SQL MVP, Microsoft RD, Contributing Editor of TechNet Magazine
Author of DBCC CHECKDB/repair (and other Storage Engine) code of SQL Server 2005