They made 71k in interest in 6 months per the amended 10Q. That is about 142k annual. That is a paltry return of a little more than a quarter of a percent. No way they get the 2.5-3% for short term safe money market types of rates but no way they should get only .28 of a percent either, IMO. .9 or 1% is more realistic so they are off by a 3 fold, IMO unless their cash balances were skewed heavily to the last Q.
Interest income was $71,000 for the first half year of 2011, representing an increase of $39,000 compared with $32,000 for the same period of 2010. Increase in interest income was due to increase in cash balances.
Where do you get $50? I see $14.22 levered free cash flow. You got to include capital expenditures and changes in their accts receivables not mentioned in your calculations. Subtract out operational cash flow and you get the $14.22.