An item in The Straits Times (Singapore) from 3 June, 2010, reports that there is a proposal in the Indonesian legislature to raise the threshold for representation from 2.5% to 5%.
The article reports that there was a similar effort in 2008, but opposition from smaller parties stopped it.
In the last election, in 2009, only one party obtained over 20% of the seats. Despite the “low” threshold, 18% of votes were “wasted” because they were for parties too small to clear the threshold.
The next elections are in 2014.
(No link to the Straits Times article is available. I found it on Lexis Nexis.)