In the process of fixed Pd-extended 0.43.1, I just found that on Ubuntu/Maverick, Gem says this once I start Pd-extended: /usr/lib/pd-extended/extra/Gem/Gem.pd_linux: /usr/lib/pd-extended/extra/Gem/Gem.pd_linux: undefined symbol: __sync_fetch_and_add_4 Gem: can't load library .hc