Wuala process still running after exist

Hello, I'm new to Wuala and not an IT technician, so excuse my explanation.

I ran wuala for the first time on my PC under W2000 (yes I know, but it works fine) and did some basic uploads etc.

This morning I exited Wuala but notice my PC internet acces was very slow. I then noticed that the process wuala was still running!

Is this normal?
How should I exit completed the programme?

Thanks, Andrew
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