Mine crashed two times.

First time on canceling a file:
bt:
#0 0x0809706a in CECTag::GetMD4Data (this=0x0) at ECPacket.h:92
#1 0x0809b397 in CEC_UpDownClient_Tag::FileID (this=0x8110ad0)
at ECSpecialTags.h:128
#2 0x0806e47f in UploadFiles (this=0xbf5ff4dc, tag=0x8110ad0)
at WebServer.cpp:2814
#3 0x0806e637 in UploadsInfo::ReQuery (this=0x80e56ac) at WebServer.cpp:2837
#4 0x0805c0ec in CWebServer::_GetTransferList (this=0x80e5600, Data=
{sURL = { = {static npos = 4294967295, m_pchData = 0x817c5b4 "/?ses=1279832946&w=transfer&op=cancel&file=7CA45B9985BCA4A54F76C8125700B"}, }, inadr = {s_addr = 0}, pSocket = 0x405029b0})
at WebServer.cpp:1181
#5 0x08054986 in CWebServer::ProcessURL (this=0x80e5600, Data=
{sURL = { = {static npos = 4294967295, m_pchData = 0x817c5b4 "/?ses=1279832946&w=transfer&op=cancel&file=7CA45B9985BCA4A54F76C8125700B"}, }, inadr = {s_addr = 0}, pSocket = 0x405029b0})
at WebServer.cpp:550
#6 0x0808d53a in CWebSocket::OnRequestReceived (this=0x405029b0,
pHeader=0x40501970 "GET /?ses=1279832946&w=transfer&op=cancel&file=7CA45B9985BCA4A54F76C8125700B HTTP/1.1\r\nHost: rooster.wg:3333\r\nUser-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.7.5) Gecko/20041107 Fi"...,
dwHeaderLen=535, pData=0x0, dwDataLen=0) at WebSocket.cpp:316
#7 0x0808c853 in CWCThread::Entry (this=0x405029a0) at WebSocket.cpp:202
#8 0x40195c5a in wxThreadInternal::PthreadStart (thread=0x405029a0) at src/unix/threadpsx.cpp:762
#9 0x40195aee in wxPthreadStart (ptr=0x405029a0) at src/unix/threadpsx.cpp:714
#10 0x40022ca3 in pthread_detach () from /lib/libpthread.so.0
#11 0x40420c97 in clone () from /lib/libc.so.6
bt full:
#0 0x0809706a in CECTag::GetMD4Data (this=0x0) at ECPacket.h:92
No locals.
#1 0x0809b397 in CEC_UpDownClient_Tag::FileID (this=0x8110ad0)
at ECSpecialTags.h:128
No locals.
#2 0x0806e47f in UploadFiles (this=0xbf5ff4dc, tag=0x8110ad0)
at WebServer.cpp:2814
No locals.
#3 0x0806e637 in UploadsInfo::ReQuery (this=0x80e56ac) at WebServer.cpp:2837
curr = {sUserName = { = {static npos = 4294967295,
m_pchData = 0x401aa14c ""}, },
nTransferredUp = 135846084, nTransferredDown = 3210736964,
nSpeed = 1075152084, nHash = {m_hash = '\0' }}
i = 0
up_req = { = { = {m_error = 0, m_tagData = 0x0,
m_tagName = 0, m_dataLen = 0, m_dynamic = false,
m_tagList = { >> = {, true>> = {
_M_start = 0x80e0db8, _M_finish = 0x80e0dd8,
_M_end_of_storage = 0x80e0dd8}, }, }}, }, m_opCode = 14 '\016'}
up_reply = (class CECPacket *) 0x81015f8
#4 0x0805c0ec in CWebServer::_GetTransferList (this=0x80e5600, Data=
{sURL = { = {static npos = 4294967295, m_pchData = 0x817c5b4 "/?ses=1279832946&w=transfer&op=cancel&file=7CA45B9985BCA4A54F76C8125700B"}, }, inadr = {s_addr = 0}, pSocket = 0x405029b0})
at WebServer.cpp:1181
sSession = { = {static npos = 4294967295,
m_pchData = 0x810155c "1279832946"}, }
sCat = { = {static npos = 4294967295,
m_pchData = 0x401aa14c ""}, }
sOp = { = {static npos = 4294967295,
m_pchData = 0x810f39c "cancel"}, }
sFileHash = { = {static npos = 4294967295,
m_pchData = 0x8101584 "7CA45B9985BCA4A54F76C8125700B"}, }
sSort = { = {static npos = 4294967295,
m_pchData = 0x401aa14c ""}, }
sDownloadSortRev = { = {static npos = 4294967295,
m_pchData = 0x401aa14c ""}, }
Out = { = {static npos = 4294967295,
m_pchData = 0x818d8c4 "\n\n