Australian tech stocks hit 5-month low, tracking Wall Street slump
** Australian tech stocks .AXIJ slip as much as 1.2%, their lowest level since April 15
** Sub-index falls after U.S. peer Nasdaq Composite .IXIC slumps on rising U.S. Treasury yields, mounting debt concerns and soaring crude prices .N
** Australian tech major WiseTech Global WTC.AX tumbles 3.5% and Xero XRO.AX slips 1.6%
** YTD, AXIJ down nearly 25%