Bug: Error 500 from the cache

What steps will reproduce the problem?
1. Install Caudium
2. Wait the cache to be sufficiently populated
3. See the error 500 from the cache coming

What is the expected output? What do you see instead?

No error 500 from the cache expected.

Please use labels and text to provide additional information.

Below's the backtrace from Debian's caudium 1.4.12

Couldn't open file /var/cache/caudium/cache/a1f6935accad89f2617e783324663449: 
Permission denied
/usr/lib/pike/7.6.112/modules/Stdio.pmod/module.pmod:1971: 
Stdio->write_file("/var/cache/caudium/cache/a1f6935accad89f2617e783324663449","/
* Storage.Disk */\n\nmapping data = ([ /* 3 elements */\n  \"key\": 
\"/f8dd53af15722e2b1b6b2c2a058126fa/meta\",\n  \"namespace\": \"Linkfirst 
VH"+[321],438)
etc/modules/Storage.pmod/Methods.pmod/Disk.pike:115: 
Storage.Methods.Disk()->store("Linkfirst VHS system 
SQL","/f8dd53af15722e2b1b6b2c2a058126fa/meta","\266ke0\1\b\6\6disk_cacheh\6\5ram
_cache\177\6\3expires\310L,\302\305\6\0hits\b'\6\4_mapping\177\6\0hash\6\34f8dd5
3af15722e2b1b6b2c2a058126fa\6\0type\6\4variable\6\2object!\6"+[86])
etc/modules/Storage.pmod/Manager.pike:140: Storage.Manager()->sync("Linkfirst 
VHS system SQL","/f8dd53af15722e2b1b6b2c2a058126fa/meta")
home/peter/hack/Pike/7.6-distmaker/src/backend.cmod:803: 
Pike.Backend(0)->`()(3600.000000)

Original issue reported on code.google.com by bertrand.lupart on 2 Feb 2011 at 4:50

bertrand-lupart / caudium

Bug: Error 500 from the cache #13