Are you downloading emails?
If they're text files you can safely delete them, or replace them with
empty files. You can also set the empty files to write protected and
see if any application gets annoyed at that. Usually that works well.
Apart from that; what is your pagefile setting? It may have grown
automatically to eat up some memory. Windows likes to do that even
when it's not necessary.
There may also be temporary internet files and general temp files
around. The built in WIndows free up memory on hard disks thingy does
a decent job of cleaning that up. Also look in the Firefox cache
directory; it may be eating up lots of space, although it shouldn't
eat gigabytes like that.
Jesper
Thanks. What is a pagefile setting and where do I find it?
Bert
It is the virtual memory file which Windows uses when the physical
memory runs low. In XP you can find the setting for it in Control
Panel -> System and then, I think, Advanced or Performance or some
such. IIRC they kept changing it with different OEM versions and
service packs, and my Windows machine is dead right now so I can't
check on it.
It should be called pagefile, virtual memory or something like that. A
good setting for a system like yours should be to set it at
1024-1024MB (or maybe 2048-2048 if it's set near that as min now),
that is the same min and max size so it doesn't grow or shrink. That
will also improve performance slightly. If you run low on memory at
that setting, try to increase it, but always same min and max value.
I did a quick google but couldn't find anything mentioning where the
pagefile is altered in Vista, so I would suspect it's in the same
place as in XP.
Jesper