You didn't say which OS, but generally 3 GB of RAM should be plenty.
You say you do photography work, but I wouldn't have thought that was RAM or Performance intensive as say, video editing, so I would not have thought RAM was an issue.
However, what I do see from your post is McAfee, Spybot, and Lavasoft's AdAware, (although you just say Adware). Sadly Spybot Search & Destroy and Lavasoft's AdAware no longer work well with today's anti-virus scanners, especially if you have Spybot's TeaTimer resident scanner and AdAware's AdWatch always running.
A good test would be to uninstall both Spybot and Lavasoft, and see if performance improves.
hi,my computer is going slow,and McAfee scan is taking forever to do a full scan,done spybot and adware scans and nothing shows up,but was told to look at my amount of RAM,as i do a lot of photographing i do have a lot of software open at the same time,i have 3.00GB of memory,well i went into task manager and performance and the physical memory is at total 3.70,cached 1011,available 976,and free 0,what do these figures mean?and do i need more RAM?thank you,karen