Are any other ubuntu users experiencing problems with yahoo chat (regardless of client)?

I have two accounts and logged into them separately (one on gyachi, and one on pidgin). When trying to message one from the other..the gyachi --> pidgin messages get through..but the pidgin --> gyachi ones don't arrive..the gyachi window says 'typing' While I'm typing, but onces I've pressed send it doesn't appear..pidgin doesn't tell me it hasn't arrived though, and it just appears in the chat window as if it Had arrived. Also, when logged in on gyachi, I can be chatting to someone, then they stop being able to read my messages, and I'm not even sure if all their's are getting through.