When I try to login to my computer form local network it denies me to do so and automatically turns off 'fast user switching' and 'logon screen' and starts to behave like it was a part of a domain (it is only in workgroup not in domain). After that I can't turn 'fast user switching' or 'logon screen' on with an error like 'Windows cannot apply chosen option of fast user switching'.

Ideas?

OK. I think it is something about TCP/IP connections limit in XP. If limit is reached, XP changes it's 'attitude' for some time :)

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