can't read messages in yahoo msg

i got problem , it's is that when i chat in yahoo messenger and tyep message to budy in yahoo messenger chat windows the message apear blank nothing i can enter type (can see) but when i enter it's blank and same problem recieving message from buddy so can u help what should i do to resolve this problem i have already check font colour and then i installed and unistall already checked from vrisu scanner so plz tell me what can i do ..
thanx a lot see u again bye for now

 

Check Yahoo Messenger's Preferences and make sure the text color (under the Appearance category) isn't set to the same color as the background in the chat window. For example, white text on a white background doesn't work real well.

 

Yahoo messenger and chat have several issues which effect the ability to post in chat and private messages. Some of the folks in this forum seem to know more about Yahoo than Yahoo does.

Check this thread http://forums.nhyrvana.com/cgi-bin/ikonboard.cgi?;act=ST;f=2;t=34

and this thread http://forums.nhyrvana.com/cgi-bin/ikonboard.cgi?;act=ST;f=2;t=250