PS2 acted weird

[johnnybgood]

Okay, I've had problems with my PS2 before, but I sent it off, and it has been working good, although lately it's been acting weird. Today I put in my Okami copy, and it made some clicking noises(had this problem in the past, although this time it's different). It made the clicking noises for a few seconds, then started up. At first, it said please put in a PS2 disc, so I restarted the system, and then the game booted. Once the game booted, it was skipping quite a bit. After this, I took the game out, unhooked my ps2, cleaned off the dust that had collected on it, and rebooted, upon which the game worked just fine. What I have been noticing is that if I don't play my ps2 for a few days, and then start, it makes a clicking noise, but only upon the first start up, and then it works fine. Any idea? I'm wondering if it's dirty because I keep it in a tv stand that has an open back and has a tendency to get real dusty.