* Investors buy on breaks, igniting late-session rally
* Strong sentiment could boost prices early next week (Recasts, updates comments, closing prices, market activity, changes dateline from LONDON)
* Disappointing Dell results drag down Wall Street
* Oil settles under $77 barrel on dollar rise, equity slip
* Strong dollar, weak stock markets pressure oil
* Increase in floating storage shields weak demand
* Investors fret about the recovery, curb riskier bets
* Weak results from Dell, D.R. Horton weigh
* Wall St dragged lower after disappointing Dell results
* Oil falls under $77 barrel on dollar rise, equity slide
* FTSEurofirst 300 falls 0.8 pct; hits 2-week closing low
* Banks among top losers; Ukrainian debt concerns weigh
* Building floating storage shields weak demand
* Dollar up for second straight day as risk appetite fades
* Stocks decline, banks park funds in Treasuries
* Dollar index <.DXY> rises as risk appetite wanes
* Gold remains supported by inflation fears, cenbank buying
* Dell shares fall after Q3 sales miss view
* D.R. Horton down after Q4 loss