CD-R's losing quality with age????

[dfw123]

I have burned many cd's over the past few years and have started noticing a problem with cd's not reading, pausing, skipping or sounding scratchy after awhile. The one that seam to be qoing bad the quickest is the "GQ Great Quality" brand (which is the cheapest and consequently what I use most). They record okay and playback perfect, but start to have trouble after a few months. I have also used "Memorex" cd's and they appear to last a lot longer before having trouble. I have several store bought, pre-recorded cd's which have played fine for years so it must be the media I'm using or my burner. I have had three burners over the years and am having this problem with disks burned by all three.
Is it common for disks to go bad like this? I haven't heard anyone mention this before so I'm trying to find a solution.
Thx all