A bug/error after snow leopard software update 10.6.4??
 

i updated my finely stable mac from 10.6.3 to 10.6.4. After the update it asked for restart and as i did so, i'm experiencing copying errors after that. While or after the copy process i get the dialog "The Finder can’t complete the operation because some data in “xxx” can’t be read or written.
(Error code -36)"
"xxx" refers to the file/folder
Has any of you uys experienced this? If so what's the solution? I would be grateful for your answers. Thnx in advance!!