Strange happenings in Thunderbird-3.0-2.7.b4.fc11

[Jim]

Thunderbird 3.0-2.7.b4.fc11 has strange problems going on.
My friends are calling me and telling me that Mouse won't work ,  can't 
send email
on SMTP server, loosing delete Icons etc.

On the first two I had them move .thunderbird into /Download, temp, and 
uninstall Thunderbird and reinstall and moving old .thunderbird back 
into /home/user and every work normal again.

As far as loosing Delete, Forward icons at top of thunderbird, I just 
right click where Icons were and replace missing icons.

Anybody experiencing any problems like this ??

I guess that's what you can expect with a Beta version.