Is an Inspiron 2650 expandable?  Here is my problem.  My memory is getting more and more full from computer protection.  It is starting to affect performance, especially online.  I have eliminated personal programs from my computer, but I keep getting messages from my ISP to download this or update that.  My computer automatically runs a virus scan every Friday night.  I remember when it scanned 50,000 files.  Now it is up to 90,000 files and I have not added a single new personal program.  So what is the answer?