People get frustrated and post their anger because the device does not do as it has been advertised. Rushing the half baked device is the reason for this. Open source is not answer to the woes of the N900. You use open source to enhance the inherent functionality of the device. What Nokia has thrown in the market is a device with unfinished thought and thinking.There was lot of Hype on N900 and lot of people wanted to change from iphone etc to the new device which on paper looked great and lot of people fell for that. However the bar was set high by iphone or similar devices and when they start using N900 , after the initial jubilation of owning a fantastic hardware the realization start sinking in that this device needs 3 to 4 software revs before it can be useful. Some people have patience to wait this out some people do not have and hence the frustration comes out. This device is diamond in rough. IT is upto Nokia and not mameo forum to make this polished device and frankly Nokia's commitment to continue development of symbian and mameo together is really questionable in long term and this period uncertanity will hurt mameo platform more than Symbian.
I am still holding on to N900 for next rev of software and then will decide to keep it or go back to Nexus/Iphone land again. Because if they do not fix the issues mentioned in the mameo forum for N900 then it is pointless to keep this device for just phone function. This is humble opinion.
Thanks for reading.