Summary: I also have experienced a problem with the yellow cartridge showing nearly empty after installing new one a week ago and no large projects. Black seems to be emptying fast as well. Either they are defective or internal problem with cartridge or Ink Level Indicator. Just noticed and went online to google problem and found it here. Thanks. Back to Staples first for new cartridge and if need bring printer in, less than year old.
Summary: This printer was the best one I'd ever purchased for a year and a half. My biggest complaint up until that point was that the printer asks to have the ink cartridges replaced way too soon and it was annoying. That was until the printer was warning that the yellow ink cartridge was empty only to have yellow ink all over inside of it. If the cartridge was that low how did that happen?
Summary: Like so many others on the web (Google Epson 4540 yellow ink problem). This printer worked great for me for one year and then yellow inked leaked all throughout the machine....now it is useless.
Summary: printer runs good up until the yellow ink starts to drip or wont print. Do your research... I was the first one to purchase this printer thats why i was not able to find out more about this problem other than now..