It looks as if it were a stick with points. It is very annoying this, I have to restart to fix it.

Is there any way to avoid or fix this without restarting the pc?
Someone more happens?

Help me please.
Thanks

Is it still happening?

try this
uninstall the client. del the folder from programs. del all cookies and temp files.
reboot the pc.
install this free app: [You must login to view link]
do the cleaner and registry clean ups. d/load the client. re-install. try