I'm having the same issues with Meebo, ive been running it for a week with zero issues but starting last night and all day today im getting logged out after 2-5 minutes. i checked the meebo boards and theres something going on and the tech team is looking further into it. Meebo IMO is the best one out there.
ebuddy was working perfect for the past few days. Today it was giving me issues when I tried to sign onto facebook chat. It also seemed like it was laggin. I was using meebo but it uses to much battery.
I think the biggest problem for eBuddy is Yahoo itself. I think Yahoo Messenger does not like it if I am signed on on my PC then switch over to my Droid. As of now I can not log into Yahoo on either machine! I get a message the account is locked on my Droid and on my PC it just does not log in. Yet I can log into my.yahoo.com and get into my account that way. I also can use the chat from yahoo mail. Go figure.