Sounds like a localization issue. In English, "2,500" is 2500 (comma is used to separate groups of three digits while period is used as the decimal symbol. This is opposite of how it is in France, where comma is used as the decimal symbol).
What do you see in kcontrol->Country/Region & Language->Numbers->Decimal Symbol ? And Thousands separator? -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]