On the date 3rd of october, Yahoo Messenger status bar cannot put status longer than 40 characters and this caused many problem to all of us. But, this afternoono I found a way to solved this problem. I have tried it in 2 computers and it works. Hope this will help you.

It is just an easy 2 steps solution. 

1. You need to go to "C:\Program Files\Yahoo!\Messenger\Cache" and open the system.xml using note pad.

2. Then,  you just need to close you yahoo messenger and open it again. Then you can type long status again. :D (Remember not to close the system.xml while you close and reopen your YM)

This how you open the system.xml using note pad. 

This is how the system.xml look like when u open it.

For this method, you do not need to edit anything. :)  

Hope this can help you.