SL very sluggish and textures looked warped

I'm getting lag everywhere I go. Even in a sim where I'm the only person. I'll even log in when there's no people around 3am or 4am Linden time, and I still get lag.

Also the scripts in my attachments aren't working. The hug script in my attachment is officially dead I'm afraid. And today, another script, my animation overrider isn't working either.

Textures aren't rezzing properly. Sometimes when I zoom out they turn into a mosaic of pixels. When I zoom in, they go back to normal.

Appearance mode takes about 5 minutes just to load the pictures. And another minute each time I so much as click on the slider.

When I build, I use the cursor to move the object left or right. After I'm done moving it and lift my mouse button off it, the object does a dance. I have to wait about a minute before it stops jerking around.

My attachments sometimes appear on the ground though they say I'm wearing it. This especially happens when I fly. Suddenly I'll just see it flosting somewhere.

I'd have to wonder if the SL cache is corrupted or something, for your install. When in doubt, I tend to uninstall/reinstall for bizarre things like that.