Property developer Henry Boot says it will move to a net cash position after it agreed the sale of a shopping centre in Ayr for £33.8m and the sale of land with planning permission to build houses in Buckingham for an undisclosed fee.Henry Boot said last month that one of its goals is to 'manage debt levels prudently.'An update on its Liqhobong mine in Lesotho has sent shares in Firestone Diamonds higher. Mining is to commence this month. Chief executive says the company is well positioned to become a significant diamond producer and reach its target of producing 1m carats a year by 2014.Online video services provider Amino Technologies has slashed full-year losses, as expected, after returning to profitability in the second half. Cambridge-based Amino lost £882,000 in the year ended 30 November compared with an £8.7m deficit the year before. Revenue rose three quarters to £44m."The sales momentum identified at the end of 2009 has continued throughout the year and into 2011 with a strong order book," it said Monday.Software company Corero is raising £2.3m from a placing at 35p a share after agreeing to buy Massachusetts-based Top Layer Networks for up to $15.3m in shares, loan notes and cash. "We are delighted that Top Layer will be our first acquisition and will provide us with the core technology for our move into network security systems - a market that offers significant growth potential," said non-executive Chairman Jens Montanana.Sareum has announced "positive" results from its pre-clinical in-vivo efficacy studies into acute myeloid leukaemia (AML), the most common form of adult leukaemia. "A recent study for Sareum's Aurora+FLT3 Kinase programme showed that the leukaemia regressed to such an extent that no detectable cancer could be found in any of the cases treated (ten in total) with a Sareum compound," it said. Leukaemia increased five to fifteen fold in the study examples treated without Sareum's compound.Water filters specialist Amiad has acquired the remaining 34% of the issued share capital of its French subsidiary, Amiad France for 69,000 shares.Kyrgyz Republic gold miner Chaarat has conditionally raised approximately £51.6m through a placing and direct subscriptions at 50p per share. "Chaarat is delighted to announce that it has now secured the funding to establish the initial production stage of the Chaarat project and take it to production," Dekel Golan, chief executive, commented. Safety harness specialist Latchways is confident of achieving current market forecasts for the year. "The export-led growth reported in our interim results announcement has continued. Progress has remained positive, with business particularly strong in North America, and we have also added to our worldwide customer basefor vertical systems. The UK construction market has remained subdued, and was adversely affected by the severe December weather."Sable Mining is encouraged by progress at Lubu Coal Concession in north-western Zimbabwe. "The results confirm the potential of Lubu and importantly demonstrate the presence of a coking coal fraction in the Main Seam as well as in three other seams," it said.