European shares fell for a fifth consecutive session on Wednesday to their lowest closing level in 10 weeks amid further signs that the pace of economic recovery will not be quick.
Group of Eight leaders believe the world economy still faces "significant risks" and may need further help.
The International Monetary Fund said the global economy was starting to pull out of recession but recovery would be sluggish and government policies need to remain supportive.
The FTSEurofirst 300 index of top European shares closed 1.1% lower at 817.12 points. Volumes were about 80% of its daily average.
The financial sector was the main loser: HSBC, Banco Santander, UBS, BNP Paribas, Aviva, KBC Groep, Legal & General and AXA were all down by 1.9% - 8.7%.
In Frankfurt, the DAX index ended at 4,572.65 points, down 25.54 or 0.56%.
In Paris, the CAC-40 index closed at 3,009.71 points, down 38.86 or 1.27%. The Swiss market index closed at 5,289.39 points, down 39.81 or 0.75%.
In London, the FTSE 100 closed at 4,140.23 points, down 46.77 or 1.12%.
In Japan, the Nikkei lost 227.04 points, 2.4%, to 9,420.75 - its lowest close since 26 May.
In Hong Kong the Hang Seng Index finished down 141.20 points at a two-week low of 17,721.07.
In Australia, the S&P/ASX 200 index broke a three-day losing streak to finish up 1.0 point at 3,767.9. The broader All Ordinaries index shed 1.8 points, or 0.05%, to 3,766.0 points.
In New Zealand, the NZX50 index closed up 4 points or 0.2%, to 2750 on turnover of $88 million.
The dollar was trading at 62.9 US cents, 79.85 Australian cents, 39.05 pence, 59.31 yen, and 0.4520 euro. The Trade Weighted Index was at 59.7.