[*]As stated above, the HTML > BbCode Converter can be intensive for your server with huge posts full of Bb Codes. If you didn't increase the maximum characters number in a message, everything should be ok. If you increased it, it might depend on the message and on your server configuration.
Instead of disabling this converter, you can enable it by setting the maximum tags to be processed (a Bb Code in a message might be processed several times to optimize the output). For reference, 1800 is a high number, 500 is a low number. If you don't want to set any limit, set 0 (default value).
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