Had a brief look at the trading update and I wouldn't be comfortable investing until the downtrend in profits at least stabilises. Net profit before tax figures: 1H10 - $15m 2H10 - $9m 1H11 - $10m 2H11 - $6-8m (implied from FY $16-$18m guidance) That's obviously coming from a place of ignorance about the company though.
With a potential takeover bid for the company on the cards the share price has rallied strongly over recent months. It looks like those who jumped in after the last profit downgrade have been well rewarded.