News roundup: the top stories at midday

**The top stories at midday on Tuesday:**

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**Central Bank's** Elderfield to step down in six months.

**Irish Dairy Board** says 2012 pre-tax profits up 5.8%.

**Tullow Oil** sells Bangladesh unit for $42.35 million.

**Kenmare** says titanium, zircon markets "subdued".

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**European** shares hold firm, shares in Kenmare up 5.6%.

**German** exports fall unexpectedly in February.

**British** manufacturing rebounds in February after snow slump.

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**Microsoft**, Nokia complain to EU over Google's Android ...