nginx errors

We are using nginx in front of out mongrel clusters and finding that
the logs are growing out of control. For every requrest we get 4
errors! Basically, for each rails request it is first going off to see
if an index.html exists, then if a static html exists, then a file
without the html... it is crazy!
Anyone have any suggestions about how to cut this down?

2008/01/21 12:10:22 [crit] 5674#0: *56088 stat() "/home/abp/ruby/
betrails/current/public/en-GB/coupon/get_coupon_update" failed (13:
Permission denied), client: *******, server: *******, request: "POST /
en-GB/coupon/get_coupon_update?
coupon=23307_0_13&eid=23307&last_update=1200933602&mid=13&pid=0 HTTP/
1.0", host: "new.offsidebet.com", referrer: *******

2008/01/21 12:10:22 [crit] 5674#0: *56088 stat() "/home/abp/ruby/
betrails/current/public/en-GB/coupon/get_coupon_update/index.html"
failed (13: Permission denied), client: *******, server: *******,
request: "POST /en-GB/coupon/get_coupon_update?
coupon=23307_0_13&eid=23307&last_update=1200933602&mid=13&pid=0 HTTP/
1.0", host: "new.offsidebet.com", referrer: *******

2008/01/21 12:10:22 [crit] 5674#0: *56088 stat() "/home/abp/ruby/
betrails/current/public/en-GB/coupon/get_coupon_update.html" failed
(13: Permission denied), client: *******, server: *******, request:
"POST /en-GB/coupon/get_coupon_update?
coupon=23307_0_13&eid=23307&last_update=1200933602&mid=13&pid=0 HTTP/
1.0", host: "new.offsidebet.com", referrer: *******

2008/01/21 12:10:22 [crit] 5674#0: *56088 stat() "/home/abp/ruby/
betrails/current/public/en-GB/coupon/get_coupon_update" failed (13:
Permission denied), client: *******, server: *******, request: "POST /
en-GB/coupon/get_coupon_update?
coupon=23307_0_13&eid=23307&last_update=1200933602&mid=13&pid=0 HTTP/
1.0", host: "new.offsidebet.com", referrer: *******