By the way, I have another Wordpress blog, and wanted to see those comments written by wp-cache… and I found the same error:
Couldn’t write to: /home/.tonka/xxxxx/blog.manzanasfrescas.com/wp-content/cache/wp-cache-c1ab6f47775fe09cb35c3eec0d639b29.html
Warning: fopen(/home/.tonka/xxxxxx/blog.manzanasfrescas.com/wp-content/cache/wp-cache-c1ab6f47775fe09cb35c3eec0d639b29.meta) [function.fopen]: failed to open stream: No space left on device in /home/.tonka/xxxxxxx/blog.manzanasfrescas.com/wp-content/plugins/wp-cache/wp-cache-phase2.php on line 240
Warning: fputs(): supplied argument is not a valid stream resource in /home/.tonka/xxxxxx/blog.manzanasfrescas.com/wp-content/plugins/wp-cache/wp-cache-phase2.php on line 241
Warning: fclose(): supplied argument is not a valid stream resource in /home/.tonka/xxxxx/blog.manzanasfrescas.com/wp-content/plugins/wp-cache/wp-cache-phase2.php on line 242
Reloading the page it worked properly… but those are not really nice error messages, and what about that “No space left on device in…”? 
I suppose that’s not the main issue, tho it looks it’s at 100%
10.176.0.29:/vol/boot/janky/tonka
9.1T 9.1T 31G 100% /home/.tonka
Also I’ve not been able to see those wp-cache marks at my blog at blog.manzanasfrescas.com, where are 'em?
Best regards,
Antonio.