Unpredictable performance, (recent)

My Mac is 20", Late 2006 running 10.7.5 Lion (11G63) Safari 6.1.5 (7537.77.4) 2.33 GH Core 2 Duo 2GB 667 Mhz DDR 2 SDRAM

Serial CK *** ** VUW

My Desktop Folder Size (it says) is 10.04 GB for 1211 items Mouse batteries are 20%

What has changed is related perhaps ?' to the Mouse. Before, if I clicked on something it opened or closed etc (i.e. one click would make something happen)

Now it asks if I want a new window…. (this would not normally happen, nor does it seem mouse-related) and each time it does this it builds up one window after another.

I found that to close these windows I first had to hold down the mouse key away from the open window before clicking the close x.

When I click on something it now gives me a list of all the actions I might want to perform. This list has 15 or so possibilities probably useful for some but confusing. If it is intentional, I can get used to it over a month or so.

All of this may be from the most recent update, but I would like to know, or is my Mac just showing its age…. can I load a fresh version of 10.7.5 ?

Is that enough info for someone to recognize a well-known problem ? Am happy to answer any questions in order to identify what is going on.

Eric

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