I track my net worth monthly on NetworthIQ.
In September 2009 our Net Worth is $627,342 which is down $11,632 from September.
This is the first time in 10 months that our net worth has dropped.
Much of the drop was due to spending for repairs and maintenance on a vacant rental property as well as the lost rent in the mean time. I haven't added up the exact cost but its around $4,000 or $5,000 in spending as well as $1,000 in lost rent. Otherwise my retirement accounts were down about $2,000 and our real estate values dropped about $2,000 too.